標題: Effects of Structural Strain and Rare-Earth Moments on Spin Cycloidal-Plane in Multiferroic Rare-Earth Manganites
作者: Hsiao, Yen-Fu
Kuo, Wei-Cheng
Mi, Chun-Wei
Chang, Kai-Ting
Luo, Chih-Wei
Wu, Kaung-Hsiung
Uen, Tzeng-Ming
Lin, Jiunn-Yuan
Juang, Jenh-Yih
電子物理學系
物理研究所
Department of Electrophysics
Institute of Physics
關鍵字: Epitaxial Strain;Structural Distortion;Cycloidal Ordering;E-Type Antiferromagnetic Ordering;Magnetic Ordering of Rare-Earth Elements
公開日期: May-2016
摘要: A series of orthorhombic multiferroic manganites (o-ReMnO3) thin films with deliberately designed strain states and different rare-earth elements were prepared to unveil the roles played by the strain and 4f-electron moments in determining the magnetic ordering and associated polarizations. The results obtained from temperature-dependent magnetization, dielectric and ferroelectric measurements revealed that the orientations of magnetic reordering and polarization varied with the specific rare-earth element involved. Namely, with the increase of total angular momentum J of the 4f-electrons of rare-earth element the orientation of magnetic reordering was changed from the b-axis (sinusoidal state) for Yb3+ to the a-axis (ab-cycloidal) for Tm3+ and, eventually to the c-axis (bc-cycloidal) for Er3+ and Ho3+. These results indicate that the Re-Mn magnetic exchange interaction plays a more important role than the external strain does in determining the magnetic and hence polarization states in multiferroic o-ReMnO3 manganites. Our results also confirmed the coexistence of different magnetic spin states in o-ReMnO3 thin films.
URI: http://dx.doi.org/10.1166/sam.2016.2692
http://hdl.handle.net/11536/133404
ISSN: 1947-2935
DOI: 10.1166/sam.2016.2692
期刊: SCIENCE OF ADVANCED MATERIALS
Volume: 8
Issue: 5
起始頁: 1036
結束頁: 1044
Appears in Collections:Articles