Effect of Ho addition on the properties of Y-system superconductors

Feng Yong; Zhou Lian; Zhang Pingxiang; Ji Ping; Wu Xiaozu; Luo Changxun; Xing Mianrong

doi:10.1007/BF00618051

Effect of Ho addition on the properties of Y-system superconductors

Feng Yong, Zhou Lian, Zhang Pingxiang, Ji Ping, Wu Xiaozu, Luo Changxun, Xing Mianrong

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Abstract

(YHo)Ba₂Cu₃O_7-y is prepared by the powder melting process and its properties are investigated. It is found that Ho addition can change the melting temperature of a Y-system superconductor. The J_cvalues of YBCO can be improved by Ho substitution, which is due to the effect of Ho addition on the number and quality of grain boundaries and the size and distribution of 211 particles. The highest J_cvalue was found to be 50,000 A/cm² (77 K, 1T, H⊥I) in Y_0.8Ho_0.2Ba₂Cu₃O_7-y. Our results indicate that the number and quality of grain boundaries have a great influence on the superconducting properties. A discussion is given on the relationship between J_cand the size and phase proportion of 211 particles. There are a lot of dense twins in the sample, and many crystal defects exist around the 211 phase.

Original language	English
Pages (from-to)	95-99
Number of pages	5
Journal	Journal of Superconductivity
Volume	5
Issue number	2
DOIs	https://doi.org/10.1007/BF00618051
State	Published - Apr 1992
Externally published	Yes

Keywords

critical current density
Ho addition
YBCO

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10.1007/BF00618051

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title = "Effect of Ho addition on the properties of Y-system superconductors",

abstract = "(YHo)Ba2Cu3O7-y is prepared by the powder melting process and its properties are investigated. It is found that Ho addition can change the melting temperature of a Y-system superconductor. The Jcvalues of YBCO can be improved by Ho substitution, which is due to the effect of Ho addition on the number and quality of grain boundaries and the size and distribution of 211 particles. The highest Jcvalue was found to be 50,000 A/cm2 (77 K, 1T, H⊥I) in Y0.8Ho0.2Ba2Cu3O7-y. Our results indicate that the number and quality of grain boundaries have a great influence on the superconducting properties. A discussion is given on the relationship between Jcand the size and phase proportion of 211 particles. There are a lot of dense twins in the sample, and many crystal defects exist around the 211 phase.",

keywords = "critical current density, Ho addition, YBCO",

author = "Feng Yong and Zhou Lian and Zhang Pingxiang and Ji Ping and Wu Xiaozu and Luo Changxun and Xing Mianrong",

year = "1992",

month = apr,

doi = "10.1007/BF00618051",

language = "英语",

volume = "5",

pages = "95--99",

journal = "Journal of Superconductivity",

issn = "0896-1107",

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TY - JOUR

T1 - Effect of Ho addition on the properties of Y-system superconductors

AU - Yong, Feng

AU - Lian, Zhou

AU - Pingxiang, Zhang

AU - Ping, Ji

AU - Xiaozu, Wu

AU - Changxun, Luo

AU - Mianrong, Xing

PY - 1992/4

Y1 - 1992/4

N2 - (YHo)Ba2Cu3O7-y is prepared by the powder melting process and its properties are investigated. It is found that Ho addition can change the melting temperature of a Y-system superconductor. The Jcvalues of YBCO can be improved by Ho substitution, which is due to the effect of Ho addition on the number and quality of grain boundaries and the size and distribution of 211 particles. The highest Jcvalue was found to be 50,000 A/cm2 (77 K, 1T, H⊥I) in Y0.8Ho0.2Ba2Cu3O7-y. Our results indicate that the number and quality of grain boundaries have a great influence on the superconducting properties. A discussion is given on the relationship between Jcand the size and phase proportion of 211 particles. There are a lot of dense twins in the sample, and many crystal defects exist around the 211 phase.

AB - (YHo)Ba2Cu3O7-y is prepared by the powder melting process and its properties are investigated. It is found that Ho addition can change the melting temperature of a Y-system superconductor. The Jcvalues of YBCO can be improved by Ho substitution, which is due to the effect of Ho addition on the number and quality of grain boundaries and the size and distribution of 211 particles. The highest Jcvalue was found to be 50,000 A/cm2 (77 K, 1T, H⊥I) in Y0.8Ho0.2Ba2Cu3O7-y. Our results indicate that the number and quality of grain boundaries have a great influence on the superconducting properties. A discussion is given on the relationship between Jcand the size and phase proportion of 211 particles. There are a lot of dense twins in the sample, and many crystal defects exist around the 211 phase.

KW - critical current density

KW - Ho addition

KW - YBCO

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U2 - 10.1007/BF00618051

DO - 10.1007/BF00618051

M3 - 文章

AN - SCOPUS:0026850215

SN - 0896-1107

VL - 5

SP - 95

EP - 99

JO - Journal of Superconductivity

JF - Journal of Superconductivity

IS - 2

ER -

Effect of Ho addition on the properties of Y-system superconductors

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Keywords

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