Correlation Between Magnetovolume and Colossal Magnetoresistance Effects in Terbium Doped La-Sr-Mn-O Perovskite

Chin. Phys. Lett.

2000, Vol. 17

Issue (5): 373-375 DOI:

Original Articles

Correlation Between Magnetovolume and Colossal Magnetoresistance Effects in Terbium Doped La-Sr-Mn-O Perovskite

WU Jian^1,2;ZHANG Shi-Yuan²;YIN Shi-Long¹;CAO Qing-Qi²;GU Kun-Ming²;DU You-Wei²

¹Mathematics and Physics Department, Hohai University, Nanjing 210098 ²National Laboratory of Solid State Microstructure Physics and Department of Physics, Nanjing University, Nanjing 210093

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WU Jian, ZHANG Shi-Yuan, YIN Shi-Long et al 2000 Chin. Phys. Lett. 17 373-375

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Abstract (La_0.67Tb_0.33)_2/3Sr_1/3MnO₃ has been studied in order to probe mechanisms responsible for the giant magnetore-sistance ratios and the lattice effect in this kind of compound. The experiment has shown a strong connection between the magnetotransport and magnetovolume properties. An applied magnetic field not only gives rise to a large negative magnetoresistance (-900%) but also produces two different magnetovolume effects which reflect two different magnetostriction mechanisms in the compound.

Keywords: 75.80.+q 75.70.Pa

Published: 01 May 2000

PACS:	75.80.+q	(Magnetomechanical effects, magnetostriction)
	75.70.Pa

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2000/V17/I5/0373

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	WU Jian
	ZHANG Shi-Yuan
	YIN Shi-Long
	CAO Qing-Qi
	GU Kun-Ming
	DU You-Wei

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