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Updated: Jul 12, 2026
09:06
Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
Stress-Mediated Ferromagnetic Spinodal Decomposition for Giant Low-Field Magnetostriction
Hongchang Wang1,2, Zhengming Zhang1,3, Jianhu Gong1
1Division of Microelectronic Materials and Devices, Zhejiang Provincial Key Laboratory of Data Storage, Hangzhou Dianzi University, Hangzhou, Zhejiang, China.
Small (Weinheim an Der Bergstrasse, Germany)
|July 10, 2026
Summary
Unloading stress in Tb-Dy-Fe alloys triggers a unique nanodomain pattern, leading to ultrahigh magnetostriction. This stress-mediated control enables advanced magnetoelastic materials for low-field sensors.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Magnetism
Background:
- Magnetoelastic systems exhibit complex domain dynamics under non-equilibrium stress.
- Understanding stress-driven transitions is crucial for developing advanced magnetic materials.
Purpose of the Study:
- To investigate stress-induced domain evolution in rhombohedral Tb-Dy-Fe alloys.
- To explore the mechanism behind stress-driven spinodal decomposition and its impact on magnetostriction.
Main Methods:
- Phase-field simulations were employed to model the magnetoelastic behavior.
- Analysis of stress unloading and its effect on microdomain (MD) and nanodomain-in-microdomain (NIMD) patterns.
Main Results:
- A stress-driven spinodal decomposition was observed, transitioning from MD to NIMD patterns.
- The transformation occurred via continuous small-angle spin reorientation, driven by effective magnetic anisotropy.
- The NIMD architecture achieved ultrahigh magnetostriction (721.5 ppm) under a low magnetic field (19.5 mT).
Conclusions:
- Stress-mediated magnetization control offers a new paradigm for adaptive magnetoelastic materials.
- The findings pave the way for novel low-field sensors and stress-responsive nanotechnologies.
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