Results 61 to 70 of about 429,377 (286)

Unexpected Asymmetric Mn‐Sb Site Mixing and Reentrant Spin‐Glass State of MnSb2Te4

Advanced Functional Materials, EarlyView.
MnSb2Te4 is an intrinsic magnetic topological insulator. Its properties are extraordinarily sensitive to tiny defects, making structural studies essential for understanding how magnetism and topology work together. This work shows that Mn can be unevenly distributed within the crystal and how that disorder is linked to a newly reported spin‐glass state
Gustavo Chavez Ponce de Leon, Ahmad Dibajeh, Gert ten Brink, Majid Ahmadi, Suyang Sun, Wei Zhang, Bart Jan Kooi, George Palasantzas   +7 more
wiley   +1 more source

Superior energy storage capacity of polymer-based bilayer composites by introducing 2D ferroelectric micro-sheets

Nature Communications
Dielectric polymer capacitors suffer from low discharged energy density and efficiency due to their low breakdown strength, small dielectric constant and large electric hysteresis.
Zhenhao Fan, Jian Dai, Yuyan Huang, Hang Xie, Yitao Jiao, Wenfeng Yue, Fu Huang, Yuqun Deng, Dawei Wang, Qingfeng Zhang, Yunfei Chang   +10 more
doaj   +1 more source

Hydrogen-terminated diamond field-effect transistor with a bilayer dielectric of HfSiON/Al2O3

AIP Advances, 2020
The fabrication of a single-crystal hydrogen-terminated diamond metal-oxide-semiconductor field-effect transistor (MOSFET) with HfSiON/Al2O3 bilayer dielectric has been carried out. HfSiON and Al2O3 layers were deposited by sputtering-deposition (SD) and
Jibran Hussain, Haris Naeem Abbasi, Wei Wang, Yan-Feng Wang, Ruozheng Wang, Hong-Xing Wang   +5 more
doaj   +1 more source

Inverse Hysteresis and Ultrasmall Hysteresis Thin‐Film Transistors Fabricated Using Sputtered Dielectrics

Advanced Electronic Materials, 2017
Large current hysteresis is observed in carbon nanotube (CNT) transistors and usually shows as a positive threshold voltage shift when the gate sweeping direction changes from positive to negative. This paper reports fabrication of inverse hysteresis CNT thin‐film transistors (TFTs) using magnetron sputtered oxide as a dielectric.
Yudan Zhao, Yujia Huo, Xiaoyang Xiao, Yingcheng Wang, Tianfu Zhang, Kaili Jiang, Jiaping Wang, Shoushan Fan, Qunqing Li   +8 more
openaire   +1 more source

Neuromorphic Devices for Extreme Environments: State‐Variable Reliability and Stabilization Strategies

Advanced Functional Materials, EarlyView.
Neuromorphic devices for extreme environments are interpreted through the physical states that store and process information. Radiation, temperature extremes, and vacuum can perturb vacancies, filaments, trapped charges, polarization, interfaces, and readout signals.
Taehyun Park, Geon Park, Junhyung Cho, Jaechan Song, Wangmyung Choi, Jaehyun Hur, Nicola Gasparini, Hocheon Yoo   +7 more
wiley   +1 more source

Excellent high-temperature dielectric energy storage performance in bilayer nanocomposites with high-entropy ferroelectric oxide fillers

Nature Communications
The low dielectric constant, limited breakdown strength, and large polarization hysteresis and conduction loss constrain discharged energy density and efficiency of polymer-based dielectric capacitors at elevated temperatures. To address these challenges,
Xuan Zhao, Lei Zhang, Zhenhao Fan, Yuyan Huang, Yongming Hu, Meng Shen, Zhao Wang, Yunbin He, Dawei Wang, Qingfeng Zhang   +9 more
doaj   +1 more source

SYNTHESIS AND CHARACTERISATION OF DIELECTRIC COMPOSITES PRODUCED FROM GLYCINE AND ALKALINE NIOBATE-BASED CERAMICS

Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ
Glycine exhibits a little piezoelectric response when poled, while lead-free alkaline niobate-based ceramics show much higher responses. This research investigates the synthesis of a dielectric composite from a combination of glycine and (K0.45Na0.51Li0 ...
Henry E. Mgbemere, Viktoriya Semeykina
doaj   +1 more source

Ferroelectric polymers and their nanocomposites for dielectric energy storage applications

APL Materials, 2021
Dielectric capacitors deliver the highest power density and operating voltage among known energy storage devices that are integrable in modern electronic and electrical systems.
Yanda Jiang, Mengjun Zhou, Zhonghui Shen, Xin Zhang, Hao Pan, Yuan-Hua Lin   +5 more
doaj   +1 more source

Proximity‐Tuned Magnetic and Transport Anomalies in All‐Epitaxial Fe5−xGeTe2/WSe2 Van der Waals Heterostructures

Advanced Functional Materials, EarlyView.
All‐epitaxial and scalable ferromagnetic/non‐magnetic Fe5−xGeTe2/WSe2 van der Waals (vdW) heterostructures exhibiting room‐temperature magnetism and perpendicular magnetic anisotropy (PMA) are realized. The system displays proximity‐tuned magnetic anisotropy, thickness‐dependent unconventional Hall effects, and temperature‐dependent sign reversal of ...
Hua Lv, Tauqir Shinwari, Kacho Imtiyaz Ali Khan, Jens Herfort, Chen Chen, Joan M. Redwing, Mehak Loyal, Gerhard Jakob, Mathias Kläui, Achim Trampert, Bernat Mundet, Belén Ballesteros, Manfred Ramsteiner, Roman Engel‐Herbert, Michael Hanke, João Marcelo J. Lopes   +15 more
wiley   +1 more source

Demo 20-28 Hysteresis Curve

, 2001
When an unmagnetized ferromagnetic material is magnetized by an external magnetic field the magnetic domains do not respond immediately and uniformly to the external field.

core