Magnetism-induced ferroelectric polarization in the c -axis-oriented orthorhombic HoMnO3 thin films

T. H. Lin, C. C. Hsieh, Chih-Wei Luo, Jiunn-Yuan Lin, C. P. Sun, H. D. Yang, C. H. Hsu, Ying-hao Chu, Kaung-Hsiung Wu, T. M. Uen, Jenh-Yih Juang

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11 Scopus citations

Abstract

The magnetism-induced ferroelectricity in the E -type orthorhombic HoMn O 3 (o -HMO) films grown on Nb-doped and undoped SrTi O 3 (001) substrates was studied. The temperature dependent magnetization in these films evidently exhibits an antiferromagnetic ordering around 44 K and an anomalous second magnetic ordering along the c -axis near 35 K. Interestingly, at this anomalous transition temperature, an associated ferroelectric polarization was probed by the P-E hysteresis measurements, indicating the intimated coupling between the ferroelectric response and the reordering of Mn spins, which has never been disclosed previously by dielectric constant measurements.

Original languageEnglish
Article number103923
Pages (from-to)1-4
Number of pages4
JournalJournal of Applied Physics
Volume106
Issue number10
DOIs
StatePublished - 15 Nov 2009

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