Bin-feng Ding. Structural and Magnetic Properties of Bi(Fe1-xMnx)O3[J]. Chinese Journal of Chemical Physics , 2012, 25(2): 204-208. doi: 10.1088/1674-0068/25/02/204-208
Citation: Bin-feng Ding. Structural and Magnetic Properties of Bi(Fe1-xMnx)O3[J]. Chinese Journal of Chemical Physics , 2012, 25(2): 204-208. doi: 10.1088/1674-0068/25/02/204-208

Structural and Magnetic Properties of Bi(Fe1-xMnx)O3

doi: 10.1088/1674-0068/25/02/204-208
Funds:  The work was supported by the National Natu-ral Science Foundation of China (No.50802041 and No.50872050), the National Basic Research Program of China (No.2011CB831524), the 2009 Self-Raised Funds Project of Langfang Science and Technology Bureau (No.2009013056), and the 2011 Key Project of the Langfang Teachers College (No.LSZZ201101).
  • Received Date: 2011-11-27
  • Bi(Fe1-xMnx)O3 bulk ceramics with Mn concentration x up to 0.3 were prepared by rapid sintering using sol-gel derived fine powders. Structure transformation is found to depend on the Mn doping concentration by X-ray diffraction and Raman spectroscopy. Bi(Fe1-xMnx)O3 maintains the rhombohedral structure of BiFeO3 with x=0.05 and 0.1, but changes to the orthorhombic structure with x=0.3. Weak ferromagnetism is observed for Bi(Fe1-xMnx)O3 with x=0.05 and 0.1, but stronger paramagnetism is observed for Bi(Fe1-xMnx)O3 with x=0.3 indicating a magnetic phase change from antiferromagnetic to paramagnetic with the structure changing from R3c to C222. Two anomalies at 30 and 140 K are observed for Bi(Fe1-xMnx)O3 with x=0.05 and 0.1. The anomaly at 30 K is concluded to be related to the freezing of cluster spin glass from dc magnetic memory and relaxation measurements.
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Structural and Magnetic Properties of Bi(Fe1-xMnx)O3

doi: 10.1088/1674-0068/25/02/204-208
Funds:  The work was supported by the National Natu-ral Science Foundation of China (No.50802041 and No.50872050), the National Basic Research Program of China (No.2011CB831524), the 2009 Self-Raised Funds Project of Langfang Science and Technology Bureau (No.2009013056), and the 2011 Key Project of the Langfang Teachers College (No.LSZZ201101).

Abstract: Bi(Fe1-xMnx)O3 bulk ceramics with Mn concentration x up to 0.3 were prepared by rapid sintering using sol-gel derived fine powders. Structure transformation is found to depend on the Mn doping concentration by X-ray diffraction and Raman spectroscopy. Bi(Fe1-xMnx)O3 maintains the rhombohedral structure of BiFeO3 with x=0.05 and 0.1, but changes to the orthorhombic structure with x=0.3. Weak ferromagnetism is observed for Bi(Fe1-xMnx)O3 with x=0.05 and 0.1, but stronger paramagnetism is observed for Bi(Fe1-xMnx)O3 with x=0.3 indicating a magnetic phase change from antiferromagnetic to paramagnetic with the structure changing from R3c to C222. Two anomalies at 30 and 140 K are observed for Bi(Fe1-xMnx)O3 with x=0.05 and 0.1. The anomaly at 30 K is concluded to be related to the freezing of cluster spin glass from dc magnetic memory and relaxation measurements.

Bin-feng Ding. Structural and Magnetic Properties of Bi(Fe1-xMnx)O3[J]. Chinese Journal of Chemical Physics , 2012, 25(2): 204-208. doi: 10.1088/1674-0068/25/02/204-208
Citation: Bin-feng Ding. Structural and Magnetic Properties of Bi(Fe1-xMnx)O3[J]. Chinese Journal of Chemical Physics , 2012, 25(2): 204-208. doi: 10.1088/1674-0068/25/02/204-208

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