Electrical Transport and Low-Field Magnetoresistance in La2/3Ca1/3MnO3/YSZ Composites

Chin. Phys. Lett.

2002, Vol. 19

Issue (8): 1168-1171 DOI:

Original Articles

Electrical Transport and Low-Field Magnetoresistance in La_2/3Ca_1/3MnO₃/YSZ Composites

YUAN Song-Liu;XIA Zheng-Cai;LIU Sheng;LI Zhong-Yi;PENG Gang;TANG Jie;ZHANG Guo-Hong;ZHANG Li-Jiang;FENG Wen;XIONG Cao-Shui

Department of Physics, Huazhong University of Science and Technology, Wuhan 430074

Cite this article:

YUAN Song-Liu, XIA Zheng-Cai, LIU Sheng et al 2002 Chin. Phys. Lett. 19 1168-1171

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Abstract Electrical transport and low-field magnetoresistance (MR) are
reported for (1-x)LCMO/xYSZ composites (0 < x < 80%)(LCMO = La_2/3Ca_1/3MnO₂ and YSZ being yttria stabilized zirconia). Different transport and MR behaviour are observed for x < 2% and x > 2%. In particular, the composite with x ≤ 1% shows a wide temperature window with a large constant MR below the transition. Based on the microscopy analysis, a possible interpretation is presented for different observations for x < 2% and x > 2% with emphasis on the boundary effect arising from insulating YSZ layers.

Keywords: 72.25.-b 75.30.Vn 75.30.-m

Published: 01 August 2002

PACS:	72.25.-b	(Spin polarized transport)
	75.30.Vn
	75.30.-m	(Intrinsic properties of magnetically ordered materials)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2002/V19/I8/01168

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	YUAN Song-Liu
	XIA Zheng-Cai
	LIU Sheng
	LI Zhong-Yi
	PENG Gang
	TANG Jie
	ZHANG Guo-Hong
	ZHANG Li-Jiang
	FENG Wen
	XIONG Cao-Shui

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