Related Experiment Video
Updated: Sep 13, 2025
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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
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Guest-Induced Reversible Phase Conversion via Spin Frustration Relief in Spin-Intercalated Layered Antiferromagnets
Qingxin Liu1,2, Honoka Nemoto1,2, Wataru Kosaka1,2
1Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|July 27, 2025
Summary
Researchers developed a novel spin-intercalated metal-organic framework (MOF) system. This material allows reversible magnetic phase switching by controlling spin frustration through solvation, offering new possibilities for functional materials.
Area of Science:
- Materials Science
- Solid State Physics
- Chemistry
Background:
- Layered metal-organic frameworks (MOFs) offer tunable magnetic properties.
- Spin frustration arises from competing magnetic interactions, influencing magnetic ordering.
- Controlling spin frustration is key to developing switchable magnetic materials.
Purpose of the Study:
- To design and synthesize a spin-intercalated layered MOF magnetic system.
- To investigate the role of spin frustration in magnetic phase transitions.
- To demonstrate reversible magnetic phase switching by controlling spin frustration.
Main Methods:
- Synthesis of a novel spin-intercalated layered MOF: [MCp*2][{Ru2(2,3,5-F3ArCO2)4}2(TCNQ)]·solv.
- Utilized decamethylmetallocenium ([MCp*2]+) and 2,3,5-trifluorobenzoate (2,3,5-F3ArCO2 -) ligands.
- Controlled magnetic properties by manipulating solvation/desolvation to modulate spin frustration.
Main Results:
- Achieved a balance between interlayer antiferromagnetic coupling (JLL) and host-guest spin coupling (JLS) to control spin frustration.
- Demonstrated 'evident' spin frustration (|JLS| ≤ |JLL|) leading to magnetic order with spin reorientation.
- Showcased 'hidden' spin frustration (|JLS| >> |JLL|) resulting in apparent ferromagnetic/ferrimagnetic behavior.
- Successfully achieved reversible switching between these two magnetic regimes via solvation control.
Conclusions:
- Spin-intercalated MOFs provide a tunable platform for studying correlated spin systems.
- Controllable solvation/desolvation enables reversible magnetic phase switching without altering intrinsic spin states.
- Findings offer fundamental insights into frustration-driven magnetic phase transitions and switchable materials.
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