Double anomalies in heat capacity and dc and ac magnetization in a superconducting Pb-porous glass nanocomposite

Y. S. Ciou, C. Tien, E. V. Charnaya, D. Y. Xing, Min-Kai Lee, Yu A. Kumzerov, A. L. Pirozerskii

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Studies of ac and dc magnetization and heat capacity in a superconducting lead-porous glass nanocomposite were carried out. Double anomalies were found on their temperature dependences at different magnetic field. The positions of anomalies of heat capacity and ac and dc magnetization correlated with each other. The additional, low-temperature anomalies shifted remarkably with increasing magnetic field. The FC and FCW curves observed upon cooling and warming, respectively, showed thermal hysteresis at the second step. The peak effect on magnetization loops was seen above 6 K. The low-temperature anomalies in the ac and dc magnetization were treated as a manifestation of transformation in the vortex system which is triggered by superconductivity in confined lead islands.

Original languageEnglish
Pages (from-to)51-55
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume477
DOIs
Publication statusPublished - 2012 Jul 1

Fingerprint

Specific heat
Magnetization
Nanocomposites
nanocomposites
specific heat
anomalies
Glass
magnetization
glass
Lead
Magnetic fields
Superconductivity
magnetic fields
Temperature
Hysteresis
Vortex flow
superconductivity
hysteresis
vortices
Cooling

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Ciou, Y. S. ; Tien, C. ; Charnaya, E. V. ; Xing, D. Y. ; Lee, Min-Kai ; Kumzerov, Yu A. ; Pirozerskii, A. L. / Double anomalies in heat capacity and dc and ac magnetization in a superconducting Pb-porous glass nanocomposite. In: Physica C: Superconductivity and its applications. 2012 ; Vol. 477. pp. 51-55.
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Double anomalies in heat capacity and dc and ac magnetization in a superconducting Pb-porous glass nanocomposite. / Ciou, Y. S.; Tien, C.; Charnaya, E. V.; Xing, D. Y.; Lee, Min-Kai; Kumzerov, Yu A.; Pirozerskii, A. L.

In: Physica C: Superconductivity and its applications, Vol. 477, 01.07.2012, p. 51-55.

Research output: Contribution to journalArticle

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AU - Ciou, Y. S.

AU - Tien, C.

AU - Charnaya, E. V.

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AU - Lee, Min-Kai

AU - Kumzerov, Yu A.

AU - Pirozerskii, A. L.

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AB - Studies of ac and dc magnetization and heat capacity in a superconducting lead-porous glass nanocomposite were carried out. Double anomalies were found on their temperature dependences at different magnetic field. The positions of anomalies of heat capacity and ac and dc magnetization correlated with each other. The additional, low-temperature anomalies shifted remarkably with increasing magnetic field. The FC and FCW curves observed upon cooling and warming, respectively, showed thermal hysteresis at the second step. The peak effect on magnetization loops was seen above 6 K. The low-temperature anomalies in the ac and dc magnetization were treated as a manifestation of transformation in the vortex system which is triggered by superconductivity in confined lead islands.

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