The study on Mössbauer spectrum of high Tc superconductor YBa2 Cu2.88Fe0.12O7-δ

Sike Xia; Ruzhang Ma

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The study on Mössbauer spectrum of high Tc superconductor YBa₂ Cu_2.88Fe_0.12O_7-δ

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- The study on Mössbauer spectrum of high Tc superconductor YBa₂ Cu_2.88Fe_0.12O_7-δ
- Nuclear Techniques Vol. 12, Issue 10, (1989)
- 作者机构：
  
  北京钢铁学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：06 December 1987，
  
  Published：1989-10
- 稿件说明：
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Sike Xia, Ruzhang Ma. The study on Mössbauer spectrum of high Tc superconductor YBa₂ Cu_2.88Fe_0.12O_7-δ[J]. Nuclear techniques, 1989, 12(10): 618-621.
DOI：

Sike Xia, Ruzhang Ma. The study on Mössbauer spectrum of high Tc superconductor YBa₂ Cu_2.88Fe_0.12O_7-δ[J]. Nuclear techniques, 1989, 12(10): 618-621. DOI：

摘要

本文研究了YBa

2.88

0.12

O7-δ高Tc超导体氧化物的穆斯堡尔效应，测定了Fe的价态和环境，并用点电荷模型进行了计算。Fe有三个亚晶位（Fe（1）、Fe（2）和Fe（3））， Fe（1）和Fe（3）占有YBa

氧化物的Cu（1）晶位，但Fe（1）周围氧的分布与Fe（3）的不同。Fe（2）占有Cu（2）晶位。Fe（1）和Fe（2）是低自旋的Fe

，而Fe（3）是高自旋的Fe

。掺铁引进一些附加氧原子，它们处在Y-Ba-Cu-O）体系中（001）平面的非Cu-O链上，这造成晶格趋向于四方结构。

Abstract

The Mössbauer effect of YBa

2.88

0.12

7-δ

high Tc superconducting oxide has been studied. The valence of Fe and its environment have been determined experimentally and by the calculation using point charge model. Fe has three sublattices sites Fe(1)

Fe(2) and Fe(3). Fe(1) and Fe(3) occupy the sites Cu(1) in YBa

7-δ

oxide

but the distribution of oxygen around Fe(1) is different from that around Fe(3). Fe(2) occupies the sites Cu(2). Fe(1) and Fe(2) are low spin Fe

while Fe(3) is high spin Fe

. Doping of iron brings some extra oxygen atoms that occupy non-Cu-O chains in (001) planes in Y-Ba-Cu-O system. This makes the lattice tend to tetragonal structure.

关键词

Keywords

references

Z. Zhao et al .，科学通报， 32 （ 1987 ）， 6 ： 412 .

M. K. Wu et al :, Phys. Rev. Lett. , 58 （ 1987 ）， 908 .

J. D. Jorgensen et al ., Phys. Rev., B , 36 （ 1987 ）， 3608 .

T. Siegrist et al ., Phys. Rev. B , 35 （ 1987 ）， 1737 .

J. F. Duncan and Golding , Quart. Rev. , 19 （ 1965 ）， 36 .

B. V. Thosar et al ., Advances in Mössbauer spectroscopy , Bombay, India , 1983 ， p. 432 .

R. M. Sternheimer , Phys. Rev. , 130 （ 1963 ）， 1423 .

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