The nature of Ho magnetism in multiferroic HoMnO3
S. Nandi, A. Kreyssig, L. Tan, J. W. Kim, J. Q. Yan, J. C. Lang, D., Haskel, R. J. McQueeney, and A. I. Goldman
TL;DR
This study investigates the magnetic behavior of Ho3+ ions in multiferroic HoMnO3 using element-specific x-ray techniques, revealing their antiferromagnetic ordering and response to electric fields.
Contribution
It provides new insights into the role of Ho3+ magnetism in HoMnO3, especially its temperature-dependent magnetic structures and electric field stability.
Findings
Ho3+ orders antiferromagnetically below 40 K
Magnetic structure remains unchanged under high electric fields
Transition to different magnetic structure below 4.5 K
Abstract
Using x-ray resonant magnetic scattering and x-ray magnetic circular dichroism, techniques that are element specific, we have elucidated the role of Ho3+ in multiferroic HoMnO3. In zero field, Ho3+ orders antiferromagnetically with moments aligned along the hexagonal c direction below 40 K, and undergoes a transition to another magnetic structure below 4.5 K. In applied electric fields of up to 1x10^7 V/m, the magnetic structure of Ho3+ remains unchanged.
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