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< Page ,Total 17 >
Unusual positive exchange bias after Zero-Field cooling at room temperature in the Co-CoO film composed of amorphous Co + CoO and crystallized Co/CoO EI SCIE
期刊论文 | 2021 , 293 | Materials Letters
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Abstract :

The exchange bias (EB) effect is the physical cornerstone of magnetic storage and spin valves. The traditional EB effect is always realized under cooling field at low temperatures, which greatly restricts the practical application of the EB effect. In this work, an unusual positive EB effect after the zero-field cooling can be observed in Co-CoO film at room-temperature. The reason for this phenomenon is that the film is composed of crystallized Co/CoO and amorphous Co + CoO, and thus there is an exchange interaction between ferromagnetic, antiferromagnetic and uncompensated antiferromagnetic. © 2021 Elsevier B.V.

Keyword :

Nanocomposite films Antiferromagnetism Interfaces (materials) Sputtering Magnetic storage Nanocomposites Cobalt compounds Thin films Cooling

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GB/T 7714 Tian, Fanghua , Guo, Jiale , Zhao, Qizhong et al. Unusual positive exchange bias after Zero-Field cooling at room temperature in the Co-CoO film composed of amorphous Co + CoO and crystallized Co/CoO [J]. | Materials Letters , 2021 , 293 .
MLA Tian, Fanghua et al. "Unusual positive exchange bias after Zero-Field cooling at room temperature in the Co-CoO film composed of amorphous Co + CoO and crystallized Co/CoO" . | Materials Letters 293 (2021) .
APA Tian, Fanghua , Guo, Jiale , Zhao, Qizhong , Li, Kaili , Cao, Kaiyan , Dai, Zhiyong et al. Unusual positive exchange bias after Zero-Field cooling at room temperature in the Co-CoO film composed of amorphous Co + CoO and crystallized Co/CoO . | Materials Letters , 2021 , 293 .
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Bright, Angle-Independent, Solvent-Responsive, and Structurally Colored Coatings and Rewritable Photonic Paper Based on High-Refractive-Index Colloidal Quasi-Amorphous Arrays SCIE
期刊论文 | 2021 , 4 (9) , 9855-9865 | ACS APPLIED NANO MATERIALS
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Abstract :

Bright structural colors with an angular-independent character are in increasing demand in many fields such as pigments, buildings, sensors, color displays, and anti-counterfeiting labels. However, the structural colors produced by amorphous colloidal assemblies with low refractive index contrast or without black additives often exhibit low color visibility and low liquid-bleaching resistibility. Herein, large-scale and angle-independent structural colors were constructed from Fe3O4@SiO2 colloidal quasi-amorphous arrays (QAAs) prepared through a rapid "spraying" process. Due to the high-refractive-index and intrinsic black nature of Fe3O4, the coatings exhibit high brightness of structural colors even on white substrates under ambient lighting conditions. Moreover, as-obtained structural colors possess the ability of antiliquid bleaching and solvent-responsiveness. More importantly, flexible Fe3O4@SiO2/PDMS photonic paper can be fabricated by permeation of PDMS into the voids of Fe3O4@SiO2 colloidal QAAs. This QAAs-based photonic paper shows the ability to infuse silicone oils into its structure, locally swelling it and changing the reflected color. In turn, the resulting colored patterns can be easily erased by applying ethanol or low molecular weight silicone oils. The as-prepared photonic paper exhibits excellent durability and is rewritable at least 50 times without any significant changes in performance. Compared with the traditional long-range ordered photonic crystals, the rapidly prepared QAAs-based photonic coatings have unique advantages in the applications of permanents, color coatings, color printing, liquid colorimetric sensors, rewritable photonic paper, etc. because of the good structural color performance and are suitable for rapid and large-area preparation.

Keyword :

structural color solvent-responsiveness quasi-amorphous structures rewritable photonic paper high-refractive-index anti-liquid bleaching

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GB/T 7714 Wen, Xiaoxiang , Lu, Xuegang , Wei, Chaoping et al. Bright, Angle-Independent, Solvent-Responsive, and Structurally Colored Coatings and Rewritable Photonic Paper Based on High-Refractive-Index Colloidal Quasi-Amorphous Arrays [J]. | ACS APPLIED NANO MATERIALS , 2021 , 4 (9) : 9855-9865 .
MLA Wen, Xiaoxiang et al. "Bright, Angle-Independent, Solvent-Responsive, and Structurally Colored Coatings and Rewritable Photonic Paper Based on High-Refractive-Index Colloidal Quasi-Amorphous Arrays" . | ACS APPLIED NANO MATERIALS 4 . 9 (2021) : 9855-9865 .
APA Wen, Xiaoxiang , Lu, Xuegang , Wei, Chaoping , Li, Jianing , Li, Yanlin , Yang, Sen . Bright, Angle-Independent, Solvent-Responsive, and Structurally Colored Coatings and Rewritable Photonic Paper Based on High-Refractive-Index Colloidal Quasi-Amorphous Arrays . | ACS APPLIED NANO MATERIALS , 2021 , 4 (9) , 9855-9865 .
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Chalcogenide perovskite BaZrS3 thin-film electronic and optoelectronic devices by low temperature processing EI SCIE
期刊论文 | 2021 , 85 | Nano Energy
WoS CC Cited Count: 3
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Abstract :

Owing to its superior visible light absorption and high chemical stability, chalcogenide perovskite barium zirconium sulfide (BaZrS3) has attracted significant attention in the past few years as a potential alternative to hybrid halide perovskites for optoelectronics. However, the high processing temperatures of BaZrS3 thin films at above 1000 severely limits their potential for device applications. Herein, we report the synthesis of BaZrS3 thin films at temperatures as low as 500 , by changing the chemical reaction pathway. The single phase BaZrS3 thin film was confirmed by X-ray diffraction and Raman spectroscopy. Atomic force microscopy and scanning electron microscopy show that crystalline size and surface roughness were consistently reduced with decreasing annealing temperature. The lower temperatures further eliminate sulfur vacancies and carbon contaminations associated with high temperature processing. The ability to synthesize chalcogenide perovskite thin films at lower temperatures removes a major hurdle for their device fabrication. The photodetectors demonstrate fast response and an on/off ratio of 80. The fabricated field effect transistors show an ambipolar behavior with electron and hole mobilities of 16.8 cm2/Vs and 2.6 cm2/Vs, respectively. © 2021 Elsevier Ltd

Keyword :

Thin films Surface roughness Zirconium compounds Sulfur compounds Temperature Field effect transistors Photodetectors Chalcogenides Perovskite Chemical stability Barium compounds Processing Atomic force microscopy Pulsed laser deposition Scanning electron microscopy Light absorption

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GB/T 7714 Yu, Zhonghai , Wei, Xiucheng , Zheng, Yixiong et al. Chalcogenide perovskite BaZrS3 thin-film electronic and optoelectronic devices by low temperature processing [J]. | Nano Energy , 2021 , 85 .
MLA Yu, Zhonghai et al. "Chalcogenide perovskite BaZrS3 thin-film electronic and optoelectronic devices by low temperature processing" . | Nano Energy 85 (2021) .
APA Yu, Zhonghai , Wei, Xiucheng , Zheng, Yixiong , Hui, Haolei , Bian, Mengying , Dhole, Samyak et al. Chalcogenide perovskite BaZrS3 thin-film electronic and optoelectronic devices by low temperature processing . | Nano Energy , 2021 , 85 .
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Solvent/UV driven information encryption based on a multilayer quasi-amorphous photonic heterostructure EI SCIE
期刊论文 | 2021 , 9 (44) , 15789-15796 | JOURNAL OF MATERIALS CHEMISTRY C
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Abstract :

Herein, we demonstrate an information encryption strategy based on multilayer quasi-amorphous photonic structures (QAPS) composed of alternating arrangements of high and low refractive index materials. The designs are created by alternately spraying monodisperse SiO2 and Fe3O4@SiO2 colloidal particles as well as CdSe/ZnS quantum dots (QDs) on a specific substrate, which can realize solvent/ultraviolet (UV) driven multiple information encryption and decryption. Due to the strong light scattering of the top SiO2 QAPS layer, the information stored in the lower Fe3O4@SiO2 layer is encrypted. After infiltration of the ethanol solvent into the voids of QAPS, the SiO2 layer becomes transparent due to the vanishing of refractive index contrast between SiO2 and ethanol, while the Fe3O4@SiO2 layer maintains bright structural color due to its high refractive index. At the same time, the information carried by QDs can be revealed under the excitation of UV light. Thus, this simple and reliable information hiding/displaying system, together with diverse encryption modes and convenient manufacturing process, makes it a potential security material to be applied in various fields.

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GB/T 7714 Wen, Xiaoxiang , Lu, Xuegang , Li, Jianing et al. Solvent/UV driven information encryption based on a multilayer quasi-amorphous photonic heterostructure [J]. | JOURNAL OF MATERIALS CHEMISTRY C , 2021 , 9 (44) : 15789-15796 .
MLA Wen, Xiaoxiang et al. "Solvent/UV driven information encryption based on a multilayer quasi-amorphous photonic heterostructure" . | JOURNAL OF MATERIALS CHEMISTRY C 9 . 44 (2021) : 15789-15796 .
APA Wen, Xiaoxiang , Lu, Xuegang , Li, Jianing , Wei, Chaoping , Yang, Sen . Solvent/UV driven information encryption based on a multilayer quasi-amorphous photonic heterostructure . | JOURNAL OF MATERIALS CHEMISTRY C , 2021 , 9 (44) , 15789-15796 .
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Thermally reshaped polyvinylpyrrolidone/SnO2@p-toluenesulfonic acid-doped polypyrrole nanocables with high capacity and excellent cycle performance as anode for lithium-ion batteries EI SCIE
期刊论文 | 2021 , 867 | JOURNAL OF ALLOYS AND COMPOUNDS
WoS CC Cited Count: 3
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Abstract :

SnO2 is one of the classic high-capacity anode candidates for lithium-ion batteries (LIBs). However, its practical application is limited by its low electrical conductivity and inferior cycling performance, where the poor cycle performance is mainly caused by large volume changes during the charging/discharging process. In this work, unique thermally reshaped polyvinylpyrrolidone/SnO2@p-toluenesulfonic acid-doped poly-pyrrole (T-PVP/SnO2@D-PPy) nanocables have been prepared by a combination of electrospinning and chemical synthesis. The T-PVP/SnO2@D-PPy nanocables have a wrapped nanoarchitecture providing a strong synergistic effect, which results in high conductivity and small volume changes during the charging/discharging processes. The T-PVP/SnO2@D-PPy nanocables could deliver a high reversible capacity of 858.2 mAh g(-1) after 200 cycles at a current density of 100 mA g(-1), indicating the outstanding electrochemical performance. This work provides an elegant method to improve the electrochemical performance of SnO2-based anodes for next-generation lithium-ion batteries and energy storage systems. (C) 2021 Elsevier B.V. All rights reserved.

Keyword :

SnO2 Lithium-ion battery Polyvinylpyrrolidone Nanocables Polypyrrole

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GB/T 7714 Tian, Fanghua , Zhang, Yanjun , Liu, Li et al. Thermally reshaped polyvinylpyrrolidone/SnO2@p-toluenesulfonic acid-doped polypyrrole nanocables with high capacity and excellent cycle performance as anode for lithium-ion batteries [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2021 , 867 .
MLA Tian, Fanghua et al. "Thermally reshaped polyvinylpyrrolidone/SnO2@p-toluenesulfonic acid-doped polypyrrole nanocables with high capacity and excellent cycle performance as anode for lithium-ion batteries" . | JOURNAL OF ALLOYS AND COMPOUNDS 867 (2021) .
APA Tian, Fanghua , Zhang, Yanjun , Liu, Li , Shi, Qian , Li, Jianing , Zhao, Qizhong et al. Thermally reshaped polyvinylpyrrolidone/SnO2@p-toluenesulfonic acid-doped polypyrrole nanocables with high capacity and excellent cycle performance as anode for lithium-ion batteries . | JOURNAL OF ALLOYS AND COMPOUNDS , 2021 , 867 .
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Giant exchange bias in micro-sized magnetic shape memory alloy particles EI SCIE
期刊论文 | 2021 , 54 (4) | Journal of Physics D: Applied Physics
WoS CC Cited Count: 1
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Abstract :

We report the effects of the magnetic ground sate and microstructure on exchange bias (EB) in ball milled Ni44Co6Mn39.5Sn10.5 alloys. A giant bias field of 1.49 T has been obtained for the micron-sized particles after 15 h milling, which is considerably larger than that of 2 h milled platelets (0.35 T) and that of the bulk alloy (0.12 T). This giant bias field is attributed to the increased volume fraction of antiferromagnetic/ferromagnetic interface, the enhanced antiferromagnetic fraction and the formed agglomerates. Our results reveal the critical roles of the magnetic ground state and microstructure of milled alloys in determining EB. © 2020 IOP Publishing Ltd.

Keyword :

Ground state Manganese alloys Cobalt alloys Microstructure Magnetic shape memory Antiferromagnetism Shape-memory alloy Tin alloys

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GB/T 7714 Liao, Xiaoqi , Svedlindh, Peter , Salazar-Alvarez, German et al. Giant exchange bias in micro-sized magnetic shape memory alloy particles [J]. | Journal of Physics D: Applied Physics , 2021 , 54 (4) .
MLA Liao, Xiaoqi et al. "Giant exchange bias in micro-sized magnetic shape memory alloy particles" . | Journal of Physics D: Applied Physics 54 . 4 (2021) .
APA Liao, Xiaoqi , Svedlindh, Peter , Salazar-Alvarez, German , Zeng, Yu-Jia , Huang, Rui , Yang, Sen et al. Giant exchange bias in micro-sized magnetic shape memory alloy particles . | Journal of Physics D: Applied Physics , 2021 , 54 (4) .
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Diverse electronic and magnetic properties of CrS2 enabling strain-controlled 2D lateral heterostructure spintronic devices EI SCIE CSCD
期刊论文 | 2021 , 7 (1) | NPJ COMPUTATIONAL MATERIALS
WoS CC Cited Count: 1
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Lateral heterostructures of two-dimensional (2D) materials, integrating different phases or materials into a single piece of nanosheet, have attracted intensive research interests for electronic devices. Extending the 2D lateral heterostructures to spintronics demands more diverse electromagnetic properties of 2D materials. In this paper, using density functional theory calculations, we survey all IV, V, and VI group transition metal dichalcogenides (TMDs) and discover that CrS2 has the most diverse electronic and magnetic properties: antiferromagnetic (AFM) metallic 1T phase, non-magnetic (NM) semiconductor 2H phase, and ferromagnetic (FM) semiconductor 1T' phase with a Curie temperature of similar to 1000K. Interestingly, we find that a tensile or compressive strain can turn the 1T' phase into a spin-up or spin-down half-metal. Such strain tunability can be attributed to the lattice deformation under tensile/compressive strain that selectively promotes the spin-up/spin-down VBM (valence band bottom) orbital interactions. The diverse electromagnetic properties and the strain tunability enable strain-controlled spintronic devices using a single piece of Crs(2) nanosheet with improved energy efficiency. As a demo, a prototypical design of the spin-valve logic device is presented. It offers a promising solution to address the challenge of high energy consumption in miniaturized spintronic devices.

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GB/T 7714 Chen, Kaiyun , Deng, Junkai , Yan, Yuan et al. Diverse electronic and magnetic properties of CrS2 enabling strain-controlled 2D lateral heterostructure spintronic devices [J]. | NPJ COMPUTATIONAL MATERIALS , 2021 , 7 (1) .
MLA Chen, Kaiyun et al. "Diverse electronic and magnetic properties of CrS2 enabling strain-controlled 2D lateral heterostructure spintronic devices" . | NPJ COMPUTATIONAL MATERIALS 7 . 1 (2021) .
APA Chen, Kaiyun , Deng, Junkai , Yan, Yuan , Shi, Qian , Chang, Tieyan , Ding, Xiangdong et al. Diverse electronic and magnetic properties of CrS2 enabling strain-controlled 2D lateral heterostructure spintronic devices . | NPJ COMPUTATIONAL MATERIALS , 2021 , 7 (1) .
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Kinetic arrest behavior in Ni-Co-Mn-Sn alloys within the phase boundary between martensite and strain glass EI SCIE
期刊论文 | 2021 , 194 | Scripta Materialia
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Kinetic arrest behavior is an interesting phenomenon that magnetic martensitic transition is suppressed during field cooling. A metastable 'austenite' is arrested at very low temperatures upon withdrawing magnetic field after field cooling. However, why such a kinetically arrested 'austenite' only appears in limited compositions has not been interpreted so far in ferromagnetic shape memory alloys. To settle this issue, the phase transforming properties and phase diagram of Ni37Co11Mn52-xSnx (x=8.5~10) system are explored. We found that kinetically arrested 'austenite' is a special frozen strain glass state, which only appears within the martensite/strain glass phase boundary composition undergoing two-step transitions, i.e., austenite to strain glass and to martensite transition sequences. The appearance of kinetic arrest behavior is due to the comparative competition between the kinetic hindrance and martensitic driving force. The comprehensive understanding of the kinetic transforming properties of these ferromagnetic shape memory alloys is beneficial for tuning their functionalities. © 2020

Keyword :

Kinetics Glass transition Nickel alloys Austenite Tin alloys Martensite Ferromagnetism Cobalt alloys Glass Ferromagnetic materials Shape-memory alloy Manganese alloys

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GB/T 7714 Hao, Chunxi , Wang, Yu , Wang, Jiaotong et al. Kinetic arrest behavior in Ni-Co-Mn-Sn alloys within the phase boundary between martensite and strain glass [J]. | Scripta Materialia , 2021 , 194 .
MLA Hao, Chunxi et al. "Kinetic arrest behavior in Ni-Co-Mn-Sn alloys within the phase boundary between martensite and strain glass" . | Scripta Materialia 194 (2021) .
APA Hao, Chunxi , Wang, Yu , Wang, Jiaotong , Liang, Chuanxin , Duan, Dong , Wang, Dong et al. Kinetic arrest behavior in Ni-Co-Mn-Sn alloys within the phase boundary between martensite and strain glass . | Scripta Materialia , 2021 , 194 .
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SnO2@C nanowires as high-performance anodic materials for lithium-ion batteries EI SCIE
期刊论文 | 2021 , 284 | Materials Letters
WoS CC Cited Count: 1
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SnO2@Carbon (SnO2@C) nanowires were prepared using the method electrospinning. After the heat treatment of the SnCl2/polyvinypyrrolidone nanofibers, SnO2 nanoparticles (~20 nm) were uniformly embedded and distributed on the surface of carbon nanowires. The SnO2@C manifested a strong synergistic effect that originated from its wrapped nanoarchitecture, which was proved to be highly conductive with small volume change. This SnO2@C nanowires shown high reversible capacity and excellent cycling performance of 680 mAh g−1 at 100 mA g−1 after 50 cycles. © 2020 Elsevier B.V.

Keyword :

Nanowires Chlorine compounds Lithium-ion batteries Heat treatment

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GB/T 7714 Tian, Fanghua , Cheng, Yangqin , Zhang, Yanjun et al. SnO2@C nanowires as high-performance anodic materials for lithium-ion batteries [J]. | Materials Letters , 2021 , 284 .
MLA Tian, Fanghua et al. "SnO2@C nanowires as high-performance anodic materials for lithium-ion batteries" . | Materials Letters 284 (2021) .
APA Tian, Fanghua , Cheng, Yangqin , Zhang, Yanjun , Zhao, Qizhong , Shi, Qian , Zhang, Yin et al. SnO2@C nanowires as high-performance anodic materials for lithium-ion batteries . | Materials Letters , 2021 , 284 .
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Enhanced photoresponse of a MoS2 monolayer using an AAO template SCIE
期刊论文 | 2021 , 11 (54) , 34410-34415 | RSC ADVANCES
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Monolayer two-dimensional transition metal dichalcogenides (TMDs) with direct band gaps, such as MoS2, have received great attention from researchers due to their peculiar band structure and physical properties. However, their extremely small thickness (0.65 nm for MoS2) results in a critically low light absorption efficiency, thus limiting their optoelectronic applications. To achieve the enhancement of the light-matter interaction in MoS2, a resonant Al/AAO (anodic alumina oxide template)/MoS2 trilayer nanocavity structure was designed and implemented in the present study. In such a system, the appropriate change in pore size and pore depth of the AAO template via control of the growth conditions allows one to adjust the thickness and refractive index of the dielectric layer (AAO). This nanocavity structure provides a possible way to regulate the light-matter interaction of MoS2 film.

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GB/T 7714 Deng, Chenhua , Kang, Kaifei , Yu, Zhonghai et al. Enhanced photoresponse of a MoS2 monolayer using an AAO template [J]. | RSC ADVANCES , 2021 , 11 (54) : 34410-34415 .
MLA Deng, Chenhua et al. "Enhanced photoresponse of a MoS2 monolayer using an AAO template" . | RSC ADVANCES 11 . 54 (2021) : 34410-34415 .
APA Deng, Chenhua , Kang, Kaifei , Yu, Zhonghai , Zhou, Chao , Yang, Sen . Enhanced photoresponse of a MoS2 monolayer using an AAO template . | RSC ADVANCES , 2021 , 11 (54) , 34410-34415 .
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