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

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)649-652
Number of pages4
JournalSolid State Communications
Volume152
Issue number8
DOIs
Publication statusPublished - Apr 2012
Externally publishedYes

Fingerprint

Superconductivity
superconductivity
Nanoparticles
nanoparticles
Magnetic susceptibility
Volume fraction
Magnetization
chemical composition
anomalies
magnetic permeability
Temperature
magnetization
Processing
Chemical analysis
temperature

Keywords

  • β-FeSe superconductor
  • High pressure
  • Nanoparticle
  • Reaction under autogenic pressure at elevated temperature (RAPET) process

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Chang, C. C., Wang, C. H., Wen, M. H., Wu, Y. R., Hsieh, Y. T., & Wu, M. K. (2012). Superconductivity in PbO-type tetragonal FeSe nanoparticles. Solid State Communications, 152(8), 649-652. https://doi.org/10.1016/j.ssc.2012.01.030

Superconductivity in PbO-type tetragonal FeSe nanoparticles. / Chang, Chung Chieh; Wang, Chih Han; Wen, Min Hsueh; Wu, Yu Ruei; Hsieh, Yao Tsung; Wu, Maw Kuen.

In: Solid State Communications, Vol. 152, No. 8, 04.2012, p. 649-652.

Research output: Contribution to journalArticle

Chang, CC, Wang, CH, Wen, MH, Wu, YR, Hsieh, YT & Wu, MK 2012, 'Superconductivity in PbO-type tetragonal FeSe nanoparticles', Solid State Communications, vol. 152, no. 8, pp. 649-652. https://doi.org/10.1016/j.ssc.2012.01.030
Chang, Chung Chieh ; Wang, Chih Han ; Wen, Min Hsueh ; Wu, Yu Ruei ; Hsieh, Yao Tsung ; Wu, Maw Kuen. / Superconductivity in PbO-type tetragonal FeSe nanoparticles. In: Solid State Communications. 2012 ; Vol. 152, No. 8. pp. 649-652.
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