氢掺杂法制备ErFeAsO基超导体
超导电性
2015-05-20 v1
摘要
我们在此展示了利用氢掺杂法稳定具有LnFeAsO1-y (Ln = 镧系元素)系列中最小晶格常数的ErFeAsO基超导体的技术。通过在1100 {\deg}C、5.0-5.5 GPa压力下，将标称组成为ErFeAsO1-y (1-y = 0.75 ~ 0.95)的压片夹在LaFeAsO0.8H0.8组成压片之间进行加热，合成了多晶样品。晶格常数a = 3.8219 {\AA}、c = 8.2807 {\AA}的样品显示出最高的超导临界温度(Tc)，分别由电阻率和磁化率的起始转变确定为44.5 K和41.0 K。我们讨论了LnFeAsO基超导体中Tc对Ln依赖性的相图。
引用
@article{arxiv.1011.5022,
title = {Synthesis of ErFeAsO-based superconductors by hydrogen doping method},
author = {Parasharam M. Shirage and Kiichi Miyazawa and Kunihiro Kihou and Chul-Ho Lee and Hijiri Kito and Kazuyasu Tokiwa and Yasumoto Tanaka and Hiroshi Eisaki and Akira Iyo},
journal= {arXiv preprint arXiv:1011.5022},
year = {2015}
}
备注
12 Pages, 5 Figures, Accepted for publication in EPL