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Resonant Quantum Magnetodielectric Effect in Multiferroic Metal-Organic Framework [CH3NH3]Co(HCOO)3.
Na Su1, Shuang Liu1, Yingjie He1
1Department of Applied Physics and Center of Quantum Materials and Devices, Chongqing University, Chongqing, 401331, China.
Small (Weinheim an Der Bergstrasse, Germany)
|December 26, 2024
Summary
Resonant quantum tunneling of magnetization (RQTM) and magnetodielectric (RQMD) effects were observed in a multiferroic metal-organic framework. These phenomena allow for electrical detection of magnetic tunneling, linked to spin-lattice coupling.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Magnetism
Background:
- Perovskite multiferroic metal-organic frameworks offer unique properties.
- Understanding quantum phenomena in these materials is crucial for advanced applications.
Purpose of the Study:
- To investigate resonant quantum tunneling of magnetization (RQTM) and resonant quantum magnetodielectric (RQMD) effects.
- To explore the relationship between magnetic and dielectric properties.
- To elucidate the role of spin-lattice coupling.
Main Methods:
- Synthesis and characterization of [CH3NH3]Co(HCOO)3.
- Low-temperature magnetic hysteresis loop measurements.
- Dielectric permittivity and magnetostriction measurements under magnetic fields.
Main Results:
- Observed intrinsic magnetic phase separation at low temperatures.
- Identified a stair-shaped magnetic hysteresis loop indicating RQTM.
- Detected pronounced peaks in dielectric permittivity linked to RQTM (RQMD effect).
- Observed magnetostriction behavior similar to magnetodielectric effect.
Conclusions:
- The coexistence of magnetic orders enables RQTM.
- The RQMD effect provides electrical detection of RQTM.
- Spin-lattice coupling is implicated in the magnetodielectric effect in this material.
Keywords:
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