期刊
CHINESE JOURNAL OF CHEMICAL PHYSICS
卷 26, 期 2, 页码 157-162出版社
CHINESE PHYSICAL SOC
DOI: 10.1063/1674-0068/26/02/157-162
关键词
Multiferroics; Structural transition; Magnetic property
资金
- Cultivation Fund of the Key Scientific and Technical Innovation Project
- Ministry of Education of China [708070]
- National Natural Science Foundation of China [10874046, 11104081]
- Fundamental Research Funds for the Central Universities [2012zz0078]
Bi1-xYbxFeO3(0 <= x <= 0.2) powders have been synthesized using a sol-gel method. The X-ray diffraction data show a structural transition from the rhombohedral R3c phase to the orthorhombic Pnma phase between x=0.1 and 0.125, which should induce a ferroelectric-paraelectric transformation. The phase transition is also proven by the Raman spectroscopy. A moderate signal on magnetization appears to illustrate the enhancement of magnetization at the transformation boundary, which is suggested to be the destruction of the spin cycloid structure at low concentration. The appearance of antiferromagnetic ordering is proposed to account for the afterward reduction of the magnetization at high concentration.
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