Anomalous magnetic ordering in b -axis-oriented orthorhombic HoMn O3 thin films

T. H. Lin, C. C. Hsieh, H. C. Shih, Chih-Wei Luo, T. M. Uen, Kaung-Hsiung Wu, Jenh-Yih Juang, Jiunn-Yuan Lin, C. H. Hsu, S. J. Liu

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Orthorhombic HoMn O3 films with well-aligned crystallographic orientations were deposited on LaAl O3 (110) single crystal substrates by using pulsed laser deposition. The nearly perfect b -axis-oriented films provide the opportunity of investigating the orientation-dependent physical property of this material. The temperature dependent magnetization evidently displays an antiferromagnetic ordering near 42 K, irrespective to the direction of applied field. Furthermore, the theoretically expected lock-in transition was clearly observed at around 30 K when field was applied along the c axis and was undetectable along the a and b axes. The 30 K transition was suppressed to 26 K when the applied field increased from 100 to 500 Oe.

Original languageEnglish
Article number132503
Number of pages3
JournalApplied Physics Letters
Issue number13
StatePublished - 2008


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