journal article·2017-12-01Open access

Nonlinear fragile-to-strong transition in a magnetic glass system driven by magnetic field

Juntao Huo, Qiang Luo, Jun-Qiang Wang, Wei Xu, Xinmin Wang, Run-Wei Li, Hai-Bin Yu

AIP Advances· Volume 7· Issue 12

Abstract

Relaxation dynamics in nonlinear response regime have become an emerging novel tool to study the dynamics and structure of glassy materials. It provides additional insights relative to the standard linear response experiments. However, limited by inherent endurance of the materials to external fields, up to now, almost all the probed nonlinear effects are very weak. Here, strong nonlinear effects are observed in magnetic systems with disordered spins (i.e. magnetic glass). In particular, we report a pronounced fragility transition as driven by the external magnetic field as a result of nonlinear dynamic response. Such model systems provide a new platform to study the glassy dynamics with large and tunable nonlinearity.
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Research context

OpenAlex topics: Material Dynamics and Properties · Theoretical and Computational Physics · Liquid Crystal Research Advancements

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology, and Engineering, Chinese Academy of Sciences 1 , Ningbo, Zhejiang 315201, China

Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology, and Engineering, Chinese Academy of Sciences 2 , Ningbo, Zhejiang 315201, China

School of Materials Science and Engineering, Tongji University 3 , Shanghai 201804, China

Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology 4 , WuHan 430074, China

Funding

National Thousand Yong Talents Program of China · One Hundred Talents Program of Chinese Academy of Science · National Natural Science Foundation of China · Natural Science Foundation of Zhejiang Province

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