Neutron Scattering Study of Sr Substitution for Ba in YBa2Cu3O7-y

Chin. Phys. Lett.

1993, Vol. 10

Issue (8): 486-488 DOI:

Original Articles

Neutron Scattering Study of Sr Substitution for Ba in YBa₂Cu₃O_7-y

DING Yongfan;LI Jizhou;YANG Jilian;ZHANG Baisheng;KANG Jian;YE Chuntang;FU Qiang^*;JIN Sheng^*;CUI Yujian^*;HE Aisheng^*;HE Yusheng^*

China Institute of Atomic Energy, Beijing 102413 ^*Department of Physics, Tsinghua University, Beijing 100084

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DING Yongfan, LI Jizhou, YANG Jilian et al 1993 Chin. Phys. Lett. 10 486-488

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Abstract Neutron diffraction and inelastic scattering were carried out on YBa_2-xSr_x Cu₃O_7-y(x=0.5, 1.0, 1.25). It was confirmed that the substitution of Sr for Ba in YBa₂Cu₃O_7-y increases the oxygen vacancies in the Cu O chain. Moreover, the substitution strengthens the coupling between the Ba O plane the Cu O chain, and reduces the crystal stability. These are possible causes of T_c depression for Sr substituted YBa₂Cu₃O_7-y.

Keywords: 61.12.Gz 74.70.Vy

Published: 01 August 1993

PACS:	61.12.Gz
	74.70.Vy

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1993/V10/I8/0486

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	DING Yongfan
	LI Jizhou
	YANG Jilian
	ZHANG Baisheng
	KANG Jian
	YE Chuntang
	FU Qiang
	JIN Sheng
	CUI Yujian
	HE Aisheng
	HE Yusheng

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