標題: Effects of compressive epitaxial strain in the b-axis on the magnetization response of orthorhombic HoMnO(3) thin films
作者: Lin, T. H.
Hsieh, C. C.
Shih, H. C.
Luo, C. W.
Uen, T. M.
Wu, K. H.
Lin, J-Y
Hsu, C-H
Juang, J. Y.
電子物理學系
Department of Electrophysics
公開日期: 2009
摘要: The orthorhombic phase HoMnO(3) (o-HMO in Pbnm symmetry setting) thin films were prepared on LaAlO(3)(110) (LAO(110)) substrates by pulsed laser deposition. While for films grown on LAO(110) substrates, the compressive strain along the b-axis was resulted from the tensile strain in the a-c plane. The films provide the opportunity of investigating the effects of strain, hence lattice elasticity, on the physical properties of this material. For o-HMO films an antiferromagnetic ordering with T(N)similar to 42 K, irrespective to the direction of applied field was clearly observed. However, an additional magnetic ordering occurring around 26.4 K was observed when the field was applied along the c-axis of o-HMO. This transition, however, was absent when the field was applied along a-and b-axis. These results indicate that the second magnetic ordering observed along the c-axis could be more relevant to the Mn moments lying along the partially strained b direction of the o-HMO which has been theoretically expected to result in incommensurate-commensurate lock-in transition.
URI: http://hdl.handle.net/11536/13278
http://dx.doi.org/10.1088/1742-6596/150/4/042114
ISSN: 1742-6588
DOI: 10.1088/1742-6596/150/4/042114
期刊: 25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 4: QUANTUM PHASE TRANSITIONS AND MAGNETISM
Volume: 150
Appears in Collections:Conferences Paper


Files in This Item:

  1. 000289891200114.pdf