Effect of sintering time on the orthorhombic structure and positron lifetime in YBa2Cu3O7-δ

CHEN Zhenping  1  ZHANG Jincang  2  LI Xigui  3 1

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Effect of sintering time on the orthorhombic structure and positron lifetime in YBa₂Cu₃O_7-δ

更新时间：2021-03-12

- Effect of sintering time on the orthorhombic structure and positron lifetime in YBa₂Cu₃O_7-δ
- NUCLEAR TECHNIQUES Issue 6, (2002)
- 作者机构：
  
  1. 郑州轻工业学院
  2. 上海大学
  3. 河南师范大学,郑州,450002
  4. ,新乡,453002
- 作者简介：
- 基金信息：
  
  国家自然科学基金 (198740 17);河南省自然科学基金 (0 2 110 10 80 0 )资助
- DOI：
  CLC： TM26
- Published：01 June 2002
- 稿件说明：
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[1]陈镇平,张金仓,李喜贵.烧结时间对YBa_2Cu_3O_(7-δ)超导体的正交结构及正电子寿命参数的影响[J].核技术,2002(06):471-475.

CHEN Zhenping 1 ZHANG Jincang 2 LI Xigui 3 1. Effect of sintering time on the orthorhombic structure and positron lifetime in YBa₂Cu₃O_7-δ[J]. Nuclear techniques, 2002, (6): 471-475.
[1]陈镇平,张金仓,李喜贵.烧结时间对YBa_2Cu_3O_(7-δ)超导体的正交结构及正电子寿命参数的影响[J].核技术,2002(06):471-475. DOI：

CHEN Zhenping 1 ZHANG Jincang 2 LI Xigui 3 1. Effect of sintering time on the orthorhombic structure and positron lifetime in YBa₂Cu₃O_7-δ[J]. Nuclear techniques, 2002, (6): 471-475. DOI：

摘要

报告了利用X射线衍射（XRD）、扫描电镜（SEM ）和正电子湮没等实验对YBa2 Cu3 O7-δ（Y- 12 3）体系正交畸变度和正电子寿命谱随烧结时间变化的研究结果。发现在 95 0℃温度的烧结条件下

在 12— 72h这一相当宽的烧结时间范围内

正电子实验具有足够的稳定性和可靠性

实验表明足够的烧结时间在Y - 12 3多晶材料制备方面是必须的。

Abstract

The effects of sintering time on the orthorhombic structure and positron lifetime parameter in YBa 2Cu 3O 7-δ have been studied by XRD?SEM and the positron experiments. It is found that on the condition of 950℃/12-72h

the positron experiment has good stability and reliability. This experiment indicates that the longer sintering time is needed to prepare Y-123 samples.

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