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Abstract <p>A β-FeSe superconductor was synthesized by use of the explosive compaction aided by post-thermal treatment. The temperature of the explosive compact was measured during the experiment to be 58.2 ± 0.5°C, and its intrinsic mechanism were analyzed through theoretical simulation. The superconducting properties of the sample were measured using a physical property measurement system. The results shown that the compact before heat treatment exhibited semiconducting characteristics, the compact after heat treatment at a maximum temperature of 500°C exhibited superconductivity at 8 K. The sample exhibited metallic behavior prior to reaching 8 K. An anomaly in resistance was observed in the vicinity of 90 K, which indicated a structural phase transition. The diamagnetic fraction volume reached 47% calculated based on ZFC data. It is evident that the explosive compaction methods can serve as a valuable adjunct to existing research methodologies for superconducting materials.</p>

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Explosion Compaction and Synthesis of β-FeSe Superconductor Aided by Post-thermal Treatment

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • Shuai Cao,
  • Mengyu Zou,
  • Yanchen Sun,
  • Congben Gao,
  • G. W. Fan

摘要

Abstract

A β-FeSe superconductor was synthesized by use of the explosive compaction aided by post-thermal treatment. The temperature of the explosive compact was measured during the experiment to be 58.2 ± 0.5°C, and its intrinsic mechanism were analyzed through theoretical simulation. The superconducting properties of the sample were measured using a physical property measurement system. The results shown that the compact before heat treatment exhibited semiconducting characteristics, the compact after heat treatment at a maximum temperature of 500°C exhibited superconductivity at 8 K. The sample exhibited metallic behavior prior to reaching 8 K. An anomaly in resistance was observed in the vicinity of 90 K, which indicated a structural phase transition. The diamagnetic fraction volume reached 47% calculated based on ZFC data. It is evident that the explosive compaction methods can serve as a valuable adjunct to existing research methodologies for superconducting materials.