Superconductivity in PbO-type tetragonal FeSe nanoparticles

Chung Chieh Chang, Chih Han Wang, Min Hsueh Wen, Yu Ruei Wu, Yao Tsung Hsieh, Maw Kuen Wu

研究成果: 雜誌貢獻文章同行評審

26 引文 斯高帕斯(Scopus)

摘要

The existence of a high-temperature superconducting phase with Tc∼40 K in PbO-type tetragonal β-FeSe has been demonstrated by application of high pressure. We have used a rapid, solvent-less reaction under autogenic pressure at elevated temperature (RAPET) process to synthesize superconducting FeSe nanoparticles. The nanoparticles obtained are mainly the superconducting β-FeSe phase. Detailed magnetization measurements on these nanoparticles show that in addition to the superconducting transition at ∼10 K, we observe an anomaly in magnetic susceptibility measurements suggesting the presence of a superconducting transition at ∼30 K in the synthesized nanoparticles. The superconducting volume fraction depends on the chemical composition of the starting materials and also on the processing time.
原文英語
頁(從 - 到)649-652
頁數4
期刊Solid State Communications
152
發行號8
DOIs
出版狀態已發佈 - 4月 2012
對外發佈

ASJC Scopus subject areas

  • 化學 (全部)
  • 凝聚態物理學
  • 材料化學

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