Microwave synthesis and phase transitions in nanoscale BiFeO3

	Microwave synthesis and phase transitions in nanoscale BiFeO3
	Luo WJ(罗万居)
刊名	JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
	2009
通讯作者	罗万居
中文摘要	Nanosized multiferroic BiFeO3 powders were synthesized by a microwave combustion method. The average crystallite sizes of the samples stay at a same level with the ratio of fuel glycine 0.5 a parts per thousand currency sign G/N a parts per thousand currency sign 1.5 and it increases significantly with G/N = 2.0. An inhomogeneity of amorphous and microcrystallites is observed directly by HRTEM. A ferromagnetic hysteresis loop with a saturation magnetization (M (S)) of similar to 0.09 mu (B) /Fe has been observed at room temperature in the sample with a crystallite size of 53 nm, whereas other powders with much smaller crystallite size (similar to 20 nm) will not saturate even at 20 kOe. These magnetic behaviors were ascribed to a combination of the magnetic enhancement effect of a decreased crystallite size and superparamagnetic mechanism.
学科主题	材料合成与加工工艺
收录类别	1
公开日期	2010-09-29
附注	Nanosized multiferroic BiFeO3 powders were synthesized by a microwave combustion method. The average crystallite sizes of the samples stay at a same level with the ratio of fuel glycine 0.5 a parts per thousand currency sign G/N a parts per thousand currency sign 1.5 and it increases significantly with G/N = 2.0. An inhomogeneity of amorphous and microcrystallites is observed directly by HRTEM. A ferromagnetic hysteresis loop with a saturation magnetization (M (S)) of similar to 0.09 mu (B) /Fe has been observed at room temperature in the sample with a crystallite size of 53 nm, whereas other powders with much smaller crystallite size (similar to 20 nm) will not saturate even at 20 kOe. These magnetic behaviors were ascribed to a combination of the magnetic enhancement effect of a decreased crystallite size and superparamagnetic mechanism.
内容类型	期刊论文
源URL	[http://ir.iee.ac.cn/handle/311042/343]
专题	电工研究所_超导材料及强磁场科学研究组_超导材料及强磁场科学研究组_期刊论文
推荐引用方式 GB/T 7714	Luo WJ. Microwave synthesis and phase transitions in nanoscale BiFeO3[J]. JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY,2009.
APA	罗万居.(2009).Microwave synthesis and phase transitions in nanoscale BiFeO3.JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY.
MLA	罗万居."Microwave synthesis and phase transitions in nanoscale BiFeO3".JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY (2009).