Preparation and characterizations of bulk GaN crystals

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	Preparation and characterizations of bulk GaN crystals
	Song, YT ; Chen, XL ; Wang, WJ ; Yuan, WX ; Cao, YG ; Wu, X
刊名	JOURNAL OF CRYSTAL GROWTH
	2004
卷号	260 期号:3-4 页码:327
关键词	NA FLUX METHOD SINGLE-CRYSTALS GROWTH MORPHOLOGY LI3N MELT
ISSN号	0022-0248
通讯作者	Song, YT (reprint author), Chinese Acad Sci, Nanometer Phys & Device Lab, Ctr Condensed Matter Phys, Inst Phys, POB 60350, Beijing 100080, Peoples R China.
中文摘要	Magnetic transitions and the magnetoresistance (MR) effect of the HfFe6Ge6-type Y1-xCexMn6Sn6 (x=0.1-0.3) compounds have been investigated in the temperature range of 5-385 K. Y0.9Ce0.1Mn6Sn6 and Y0.825Ce0.175Mn6Sn6 show antiferromagnetism and Y0.7Ce0.3Mn6Sn6 undergoes an antiferromagnetic (AFM) to ferrimagnetic (Fi) transition with increasing temperature. The metamagnetic transition from helical antiferromagnetism to ferrimagnetism can be also induced by an applied field for those compounds. The metamagnetic transition field decreases with increasing Ce content, such as from 25 kOe for x=0.1 to 11 kOe for x=0.3 at 5 K. The giant MR (GMR) effect for Y1-xCexMn6Sn6 (x=0.1-0.3) is observed with metamagnetic behaviour, such as -37% at 5 K under a field of 50 kOe for the compounds (x=0.175 and 0.3). It is found that the MR behaviour for Y0.7Ce0.3Mn6Sn6 in the Fi state follows the magnetic-field power law MR proportional to-H-q at a fixed temperature, and obeys the relationship MR=-[alpha+beta/(T+gamma)] under a fixed magnetic field.
收录类别	SCI
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/51271]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Song, YT,Chen, XL,Wang, WJ,et al. Preparation and characterizations of bulk GaN crystals[J]. JOURNAL OF CRYSTAL GROWTH,2004,260(3-4):327.
APA	Song, YT,Chen, XL,Wang, WJ,Yuan, WX,Cao, YG,&Wu, X.(2004).Preparation and characterizations of bulk GaN crystals.JOURNAL OF CRYSTAL GROWTH,260(3-4),327.
MLA	Song, YT,et al."Preparation and characterizations of bulk GaN crystals".JOURNAL OF CRYSTAL GROWTH 260.3-4(2004):327.