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Magnetoelectric and Magnetostrictive Effects in Scheelite-Type HoCrO4
Xudong Shen1,2, Long Zhou2, Zhehong Liu2,3
1Songshan Lake Materials Laboratory, Dongguan 523808, Guangdong, China.
Inorganic Chemistry
|August 19, 2022
Summary
Scheelite-type HoCrO4 exhibits an antiferromagnetic transition at 23 K. External magnetic fields induce a metamagnetic transition, leading to significant magnetoelectric and magnetostrictive effects in this material.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Solid State Chemistry
Background:
- HoCrO4 in the scheelite-type structure is synthesized under high pressure.
- The material exhibits complex magnetic ordering due to Ho3+ and Cr5+ ions.
Purpose of the Study:
- Investigate the magnetic properties and phase transitions of scheelite-type HoCrO4.
- Explore the magnetoelectric and magnetoelastic effects in HoCrO4 under external magnetic fields.
Main Methods:
- High-pressure synthesis of scheelite-type HoCrO4.
- Magnetic susceptibility measurements to determine magnetic ordering temperature (TN).
- Magnetization and magnetoelectric measurements as a function of magnetic field and temperature.
Main Results:
- An antiferromagnetic phase transition was observed at TN ≈ 23 K.
- A metamagnetic transition was induced by a magnetic field of ~1.1 T, resulting in high magnetization (8.5 μB/f.u. at 2 K).
- Significant linear magnetoelectric and magnetostrictive effects (up to 300 ppm) were observed, with polarization increasing near the critical field.
Conclusions:
- Scheelite-type HoCrO4 displays field-induced metamagnetism, coexisting ferromagnetism and ferroelectricity.
- Strong magnetoelectric and magnetoelastic couplings are present, influenced by the Ho3+ anisotropy.
- The material shows potential for applications in advanced electronic devices.
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