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< Page ,Total 16 >
Tuning the Magnetic Anisotropy of Fe3O4/Pt Heterostructures Fabricated by Atomic Layer Deposition With In Situ Magnetic Field SCIE
期刊论文 | 2019 , 55 (3) | IEEE TRANSACTIONS ON MAGNETICS
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Abstract :

Research on tuning the magnetic anisotropy of magnetic heterostructures has been receiving intensive attentions due to their intriguing tuning phenomena. In particular, tuning the magnetic anisotropy by in situ magnetic field during the fabrication process allows a remarkable control of magnetism with energy efficiency and shows significant potential applications for compact, fast, and low-power microwave and electronic devices. In this paper, in situ external out-of-plane and in-plane magnetic fields were applied during the deposition of Fe3O4 thin films on Pt substrates by atomic layer deposition at different temperatures (350 degrees C, 400 degrees C, and 450 degrees C). The effects of in situ magnetic field with different directions on the surface morphologies and magnetic properties of Fe3O4/Pt heterostructures were characterized. It was found that both the out-of-plane and in-plane external magnetic fields tuned the magnetic anisotropy of ferromagnetic Fe3O4 when deposited at 400 degrees C with the maximum resonance field changes of 620 and 1930 Oe along in-plane and out-of-plane directions, respectively. This paper achieves tuning the magnetic properties through in situ magnetic field and provides a possibility for spintronic devices.

Keyword :

Fe3O4/Pt heterostructures magnetic anisotropy Atomic layer deposition (ALD) in situ magnetic field

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GB/T 7714 Zhang, Le , Zhou, Ziyao , Zhang, Yijun et al. Tuning the Magnetic Anisotropy of Fe3O4/Pt Heterostructures Fabricated by Atomic Layer Deposition With In Situ Magnetic Field [J]. | IEEE TRANSACTIONS ON MAGNETICS , 2019 , 55 (3) .
MLA Zhang, Le et al. "Tuning the Magnetic Anisotropy of Fe3O4/Pt Heterostructures Fabricated by Atomic Layer Deposition With In Situ Magnetic Field" . | IEEE TRANSACTIONS ON MAGNETICS 55 . 3 (2019) .
APA Zhang, Le , Zhou, Ziyao , Zhang, Yijun , Peng, Bin , Ren, Wei , Ye, Zuo-Guang et al. Tuning the Magnetic Anisotropy of Fe3O4/Pt Heterostructures Fabricated by Atomic Layer Deposition With In Situ Magnetic Field . | IEEE TRANSACTIONS ON MAGNETICS , 2019 , 55 (3) .
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Ionic Modulation of Interfacial Magnetism in Light Metal/Ferromagnetic Insulator Layered Nanostructures EI Scopus SCIE
期刊论文 | 2019 , 29 (1) | Advanced Functional Materials
WoS CC Cited Count: 3 SCOPUS Cited Count: 2
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Abstract :

© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Ferromagnetic insulator thin film nanostructures are becoming the key component of the state-of-the-art spintronic devices, for instance, yttrium iron garnet (YIG) with low damping, high Curie temperature, and high resistivity is explored into many spin–orbit interactions related spintronic devices. Voltage modulation of YIG, with great practical/theoretical significance, thus can be widely applied in various YIG-based spintronics effects. Nevertheless, to manipulate ferromagnetism of YIG through electric field (E-field), instead of current, in an energy efficient manner is essentially challenging. Here, a YIG/Cu/Pt layered nanostructure with a weak spin–orbit coupling interaction is fabricated, and then the interfacial magnetism of the Cu and YIG is modified via ionic liquid gating method significantly. A record-high E-field-induced ferromagnetic resonance field shift of 1400 Oe is achieved in YIG (17 nm)/Cu (5 nm)/Pt (3 nm)/ionic liquid/Au capacitor layered nanostructures with a small voltage bias of 4.5 V. The giant magnetoelectric tunability comes from voltage-induced extra ferromagnetic ordering in Cu layer, confirmed by the first-principle calculation. This E-field modulation of interfacial magnetism between light metal and magnetic isolator may open a door toward compact, high-performance, and energy-efficient spintronic devices.

Keyword :

Cu magnetization ferromagnetic resonance ionic liquid gating magnetoelectric coupling yttrium iron garnet

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GB/T 7714 Guan, Mengmeng , Wang, Lei , Zhao, Shishun et al. Ionic Modulation of Interfacial Magnetism in Light Metal/Ferromagnetic Insulator Layered Nanostructures [J]. | Advanced Functional Materials , 2019 , 29 (1) .
MLA Guan, Mengmeng et al. "Ionic Modulation of Interfacial Magnetism in Light Metal/Ferromagnetic Insulator Layered Nanostructures" . | Advanced Functional Materials 29 . 1 (2019) .
APA Guan, Mengmeng , Wang, Lei , Zhao, Shishun , Peng, Bin , Su, Wei , He, Zhexi et al. Ionic Modulation of Interfacial Magnetism in Light Metal/Ferromagnetic Insulator Layered Nanostructures . | Advanced Functional Materials , 2019 , 29 (1) .
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Strategies to achieve high performance piezoelectric nanogenerators EI Scopus SCIE
期刊论文 | 2019 , 55 , 288-304 | Nano Energy
WoS CC Cited Count: 4 SCOPUS Cited Count: 4
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© 2018 Elsevier Ltd Piezoelectric nanogenerators have attracted much attention in the past decade. In this study, the development of piezoelectric nanogenerators and their progress toward high power generation is discussed. The characteristics and application range of numerous types of piezoelectric nanogenerators are also considered. In addition, several strategies that may improve the performance of piezoelectric nanogenerators are summarized. Here, we compare the open circuit voltages and short circuit currents of various piezoelectric nanogenerators under different factors, and the current problems of piezoelectric nanogenerators are also discussed. Finally, the future prospects and directions of piezoelectric nanogenerators are predicted. Future studies should be focused on the production of high-performance materials, the establishment of working principle and simulation model, the integration of nanogenerator, and the design of the energy harvesting circuit. Hence, it is emergency to search for functional materials with high piezoelectricity and further improve the electromechanical properties of existing piezoelectric materials. Moreover, further research is needed to increase the stability and flexibility of composite materials, to develop wearable and embedded flexible functional devices based on the biocompatibility of inorganic nanoparticles, and to supply power for microelectronic systems.

Keyword :

BaTiO3 Chemical doping Composite thin film materials Nanostructure Piezoelectric nanogenerators PVDF

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GB/T 7714 Hu, Dengwei , Yao, Minggang , Fan, Yong et al. Strategies to achieve high performance piezoelectric nanogenerators [J]. | Nano Energy , 2019 , 55 : 288-304 .
MLA Hu, Dengwei et al. "Strategies to achieve high performance piezoelectric nanogenerators" . | Nano Energy 55 (2019) : 288-304 .
APA Hu, Dengwei , Yao, Minggang , Fan, Yong , Ma, Chunrui , Fan, Mingjin , Liu, Ming . Strategies to achieve high performance piezoelectric nanogenerators . | Nano Energy , 2019 , 55 , 288-304 .
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Voltage Control of Two-Magnon Scattering in Multiferroic Layers for Tunable Magnetoelectric Devices EI Scopus SCIE
期刊论文 | 2018 , 54 (11) | IEEE Transactions on Magnetics
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In this paper, multiferroic heterostructures have been prepared by growing MnZn ferrite films on ferroelectric single substrates using pulsed laser deposition technology. An enhanced magnetoelectric coupling has been achieved at the critical two-magnon scattering (TMS) angles, where the ferromagnetic resonance field shifts -653 and 211 Oe. The contribution of TMS effects is much larger than that of the conventional strain effect. This heterostructure provides an alternative route for novel integrated multiferroic materials and devices. © 1965-2012 IEEE.

Keyword :

Alternative routes Ferromagnetic resonance (FMR) Magnetoelectric couplings Magnetoelectric devices Multiferroic heterostructure Multiferroic materials Perpendicular magnetic anisotropy Two-magnon scattering

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GB/T 7714 Hou, W. , Zhou, Z. , Xue, X. et al. Voltage Control of Two-Magnon Scattering in Multiferroic Layers for Tunable Magnetoelectric Devices [J]. | IEEE Transactions on Magnetics , 2018 , 54 (11) .
MLA Hou, W. et al. "Voltage Control of Two-Magnon Scattering in Multiferroic Layers for Tunable Magnetoelectric Devices" . | IEEE Transactions on Magnetics 54 . 11 (2018) .
APA Hou, W. , Zhou, Z. , Xue, X. , Guan, M. , Hu, Z. , Liu, M. . Voltage Control of Two-Magnon Scattering in Multiferroic Layers for Tunable Magnetoelectric Devices . | IEEE Transactions on Magnetics , 2018 , 54 (11) .
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Voltage control of perpendicular magnetic anisotropy in (Co/Pt)(3)/Pb(Zn1/3Nb2/3)( )O-3-PbTiO3 multiferroic heterostructures at room temperature EI SCIE Scopus
期刊论文 | 2018 , 113 (14) | APPLIED PHYSICS LETTERS
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Voltage control of perpendicular magnetic anisotropy (PMA) in ferromagnetic/ferroelectric multiferroic heterostructures is a promising method to enable high density and low power perpendicular magnetic information storage. In this study, we successfully achieved large voltage tuning of PMA at room temperature in (Co/Pt)(3)/Pb(Zn1/3Nb2/3)-PbTiO3 (PZN-PT) multiferroic heterostructures. Voltage tuning of magnetic anisotropy and the magnetoelectric coupling effect has been qualitatively studied by ferromagnetic resonance, and the multiferroic heterostructure could be reversibly flipped between two distinct PMA states under zero or high electric fields. During the linear piezo-strain response of PZN-PT, the multiferroic heterostructures exhibit small magnetoelectric coupling and the electric field-induced magnetic anisotropy field was about 295 Oe. During the electric field-induced phase transition of PZN-PT, voltage tuning of PMA enhanced more than two times that of the first linear region and the electric field-induced magnetic anisotropy field increased to 634 Oe. Finally, this magnetoelectric coupling was enhanced to 672 Oe by applying 12 kV/cm, corresponding to a large magnetoelectric coupling coefficient up to 56 Oe cm/kV. Benefiting from the giant strain response during voltage-induced phase transition in PZN-PT, voltage tuning of PMA in those multiferroic heterostructures is a promising candidate for power-efficient magnetic memories. Published by AIP Publishing.

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GB/T 7714 Peng, Bin , Feng, Mengmeng , Zhang, Yijun et al. Voltage control of perpendicular magnetic anisotropy in (Co/Pt)(3)/Pb(Zn1/3Nb2/3)( )O-3-PbTiO3 multiferroic heterostructures at room temperature [J]. | APPLIED PHYSICS LETTERS , 2018 , 113 (14) .
MLA Peng, Bin et al. "Voltage control of perpendicular magnetic anisotropy in (Co/Pt)(3)/Pb(Zn1/3Nb2/3)( )O-3-PbTiO3 multiferroic heterostructures at room temperature" . | APPLIED PHYSICS LETTERS 113 . 14 (2018) .
APA Peng, Bin , Feng, Mengmeng , Zhang, Yijun , Zhou, Ziyao , Hu, Zhongqiang , Liu, Ming . Voltage control of perpendicular magnetic anisotropy in (Co/Pt)(3)/Pb(Zn1/3Nb2/3)( )O-3-PbTiO3 multiferroic heterostructures at room temperature . | APPLIED PHYSICS LETTERS , 2018 , 113 (14) .
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Temperature induced interface and optical properties of the multi-layer nanotube network EI SCIE Scopus
期刊论文 | 2018 , 123 (22) | JOURNAL OF APPLIED PHYSICS
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The ever-increasing demand for larger surface area, well-defined, and conformal multi-layer nanostructures in gas sensor, catalyst and solar cell applications has propelled the exploration of such nanostructures within an atomic resolution. The atomic layer deposition (ALD) technique is ideal for the synthesis of these nanostructures due to its excellent step coverage ability on high aspect ratio nanostructures. In this work, different coaxial nanotube networks are successfully fabricated by electrospinning and ALD, with a well-controlled phase. We systematically studied the temperature-induced microstructures and photoluminescence property evolution of the nanotube network. The Al2O3/ZnO/Al2O3 tri-layer nanotube network is obtained by sintering at 400 degrees C, and a ZnAl2O4 core-shell nanotube structure has formed by the Kirkendall effect by further post-annealing at 700 degrees C. Oxygen accumulation is clearly observed at the small neck feature, but the Zn and Al elements are uniformly distributed along the whole nanotube. Photoluminescence emission obtained in this work is so broad that it almost covers the whole visible light wavelength range. The results indicate that the microstructures and photoluminescence properties can be well-controlled by the post-annealing temperature. It provides an available platform for realizing conformal 3D nano-devices. Published by AIP Publishing.

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GB/T 7714 Zhang, Yijun , Liu, Ming , Peng, Bin et al. Temperature induced interface and optical properties of the multi-layer nanotube network [J]. | JOURNAL OF APPLIED PHYSICS , 2018 , 123 (22) .
MLA Zhang, Yijun et al. "Temperature induced interface and optical properties of the multi-layer nanotube network" . | JOURNAL OF APPLIED PHYSICS 123 . 22 (2018) .
APA Zhang, Yijun , Liu, Ming , Peng, Bin , Zhou, Ziyao , Wang, Chenying , Jing, Weixuan et al. Temperature induced interface and optical properties of the multi-layer nanotube network . | JOURNAL OF APPLIED PHYSICS , 2018 , 123 (22) .
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Achieving Higher Strength and Sensitivity toward UV Light in Multifunctional Composites by Controlling the Thickness of Nanolayer on the Surface of Glass Fiber EI SCIE PubMed Scopus
期刊论文 | 2018 , 10 (27) , 23399-23405 | ACS APPLIED MATERIALS & INTERFACES
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The interphase between fiber and matrix plays an essential role in the performance of composites. Therefore, the ability to design or modify the interphase is a key technology needed to manufacture stronger and smarter composite. Recently, depositing nanomaterials onto the surface of the fiber has become a promising approach to optimize the interphase and composites. But, the modified composites have not reached the highest strength yet, because the determining parameters, such as thickness of the nanolayer, are hardly controlled by the mentioned methods in reported works. Here, we deposit conformal ZnO nanolayer with various thicknesses onto the surfaces of glass fibers via the atomic layer deposition (ALD) method and a tremendous enhancement of interfacial shear strength of composites is achieved. Importantly, a critical thickness of ZnO nanolayer is obtained for the first time, giving rise to a maximal relative enhancement in the interfacial strength, which is more than 200% of the control fiber. In addition, the single modified fiber exhibits a potential application as a flexible, transparent, in situ UV detector in composites. And, we find the UV-sensitivity also shows a strong correlation with the thickness of ZnO. To reveal the dependence of UV-sensitivity on thickness, a depletion thickness is estimated by a proposed model which is an essential guide to design the detectors with higher sensitivity. Consequently, such precise tailoring of the interphase offers an advanced way to improve and to flexibly control various macroscopic properties of multifunctional composites of the next generation.

Keyword :

interfacial strength UV detector atomic layer deposition multifunctional composites ZnO nanolayer

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GB/T 7714 Sun, Chao , Zhang, Jie , Gao, Shang-Lin et al. Achieving Higher Strength and Sensitivity toward UV Light in Multifunctional Composites by Controlling the Thickness of Nanolayer on the Surface of Glass Fiber [J]. | ACS APPLIED MATERIALS & INTERFACES , 2018 , 10 (27) : 23399-23405 .
MLA Sun, Chao et al. "Achieving Higher Strength and Sensitivity toward UV Light in Multifunctional Composites by Controlling the Thickness of Nanolayer on the Surface of Glass Fiber" . | ACS APPLIED MATERIALS & INTERFACES 10 . 27 (2018) : 23399-23405 .
APA Sun, Chao , Zhang, Jie , Gao, Shang-Lin , Zhang, Nan , Zhang, Yi-Jun , Zhuang, Jian et al. Achieving Higher Strength and Sensitivity toward UV Light in Multifunctional Composites by Controlling the Thickness of Nanolayer on the Surface of Glass Fiber . | ACS APPLIED MATERIALS & INTERFACES , 2018 , 10 (27) , 23399-23405 .
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A Self-biased Anisotropic Magnetoresistive (AMR) Magnetic Field Sensor on Flexible Kapton CPCI-S
会议论文 | 2018 | IEEE International Magnetics Conference (INTERMAG)
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GB/T 7714 Wang, C. , Su, W. , Pu, J. et al. A Self-biased Anisotropic Magnetoresistive (AMR) Magnetic Field Sensor on Flexible Kapton [C] . 2018 .
MLA Wang, C. et al. "A Self-biased Anisotropic Magnetoresistive (AMR) Magnetic Field Sensor on Flexible Kapton" . (2018) .
APA Wang, C. , Su, W. , Pu, J. , Hu, Z. , Liu, M. . A Self-biased Anisotropic Magnetoresistive (AMR) Magnetic Field Sensor on Flexible Kapton . (2018) .
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Self-Polarization in Epitaxial Fully Matched Lead-Free Bismuth Sodium Titanate Based Ferroelectric Thin Films EI SCIE PubMed Scopus
期刊论文 | 2018 , 10 (28) , 23945-23951 | ACS APPLIED MATERIALS & INTERFACES
WoS CC Cited Count: 2 SCOPUS Cited Count: 2
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Abstract :

The Bi0.5Na0.5TiO3-based ferroelectric is one of the most promising candidates for environment-friendly lead-free ferroelectric/piezoelectric materials for various applications such as actuators and micro-electromechanical systems. The understanding and tailoring of the ferro-(piezo-)electric properties of thin films, however, are strongly hindered by the formation of the defects such as dislocations, ion vacancies in the film, as well as by the complexity of the interface between the film and the substrate. An ideal system for the study of the polarization behavior in the ferro-(piezo-)electric film would be a fully matched system. In this work, monocrystalline 0.89Bi(0.5)Na(0.5)TiO(3)-0.11BaTiO(3) thin films were epitaxially grown on (001)-oriented Nb-doped SrTiO3 substrates using a sol gel technique. The films were almost fully lattice- and thermally matched with the substrate, thus avoiding the impact of dislocations and thermal stress. The films were self-poled by a built-in electric field, originating from the sedimentation of heavier atoms during the film preparation. As a consequence, an upward self-polarization was introduced into the films, giving rise to asymmetric phase hysteresis loops and domain switching current responses. These results highlight the importance of the interface complexity for the self-polarization of piezoelectric thin films, even for fully matched films, which will therefore facilitate the control of properties of piezoelectric films and their applications for various functional devices.

Keyword :

epitaxial growth thermally matched lattice-matched sol-gel thin film lead-free

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GB/T 7714 Zhao, Jinyan , Niu, Gang , Ren, Wei et al. Self-Polarization in Epitaxial Fully Matched Lead-Free Bismuth Sodium Titanate Based Ferroelectric Thin Films [J]. | ACS APPLIED MATERIALS & INTERFACES , 2018 , 10 (28) : 23945-23951 .
MLA Zhao, Jinyan et al. "Self-Polarization in Epitaxial Fully Matched Lead-Free Bismuth Sodium Titanate Based Ferroelectric Thin Films" . | ACS APPLIED MATERIALS & INTERFACES 10 . 28 (2018) : 23945-23951 .
APA Zhao, Jinyan , Niu, Gang , Ren, Wei , Wang, Lingyan , Dong, Guohua , Zhang, Nan et al. Self-Polarization in Epitaxial Fully Matched Lead-Free Bismuth Sodium Titanate Based Ferroelectric Thin Films . | ACS APPLIED MATERIALS & INTERFACES , 2018 , 10 (28) , 23945-23951 .
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Voltage control of magnetism through two-magnon scattering effect for magnetoelectric microwave devices EI Scopus SCIE
期刊论文 | 2018 , 54 (11) | IEEE Transactions on Magnetics
WoS CC Cited Count: 1 SCOPUS Cited Count: 1
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Electric field control of dynamic spin interactions is promising to break through the limitation of the magnetostatic interaction-based magnetoelectric (ME) coupling effect. In this paper, electric field control of the two-magnon scattering (TMS) effect has been demonstrated in Ni0.5Zn0.5Fe2O4/Pb(Mn2/3Nb1/3)-PbTiO3 (001) multiferroic heterostructure. The TMS effect is an extrinsic magnetic damping mechanism that scatters the uniform spin motions excited by ferromagnetic resonance (FMR) into degenerate states of spin waves, offering a framework for voltage control of spin dynamics and further increase the ME effect. The angular dependence FMR measurement has been performed by the electron paramagnetic resonance spectrometer. A large electric field modulation of FMR field (-347 Oe) and FMR linewidth (275 Oe) is achieved at the TMS angle of θH = 60. Particularly, the TMS effect contribute to ME coupling at the critical TMS angle is about 194% in magnitude compared with that of the strain effect-mediated ME coupling. The TMS intensity is increased by 14.5% under electric field at room temperature. © 1965-2012 IEEE.

Keyword :

Angular dependence Degenerate state Electric field modulation Electric-field control Ferromagnetic resonance (FMR) Magnetostatic interactions Multiferroic heterostructure Two-magnon scattering

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GB/T 7714 Xue, X. , Zhou, Z. , Hou, W. et al. Voltage control of magnetism through two-magnon scattering effect for magnetoelectric microwave devices [J]. | IEEE Transactions on Magnetics , 2018 , 54 (11) .
MLA Xue, X. et al. "Voltage control of magnetism through two-magnon scattering effect for magnetoelectric microwave devices" . | IEEE Transactions on Magnetics 54 . 11 (2018) .
APA Xue, X. , Zhou, Z. , Hou, W. , Guan, M. , Hu, Z. , Liu, M. . Voltage control of magnetism through two-magnon scattering effect for magnetoelectric microwave devices . | IEEE Transactions on Magnetics , 2018 , 54 (11) .
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