Low field magnetic relaxation of superconducting C60Rb3

L. M. Wang, Hong-Chang Yang, J. H. Hwang, C. Y. Mou, Herng-Er Horng

Research output: Contribution to journalArticle

Abstract

The relaxation of magnetization M in superconducting C60Rb3 have been measured at different temperature ranges in low magnetic fields below Tc to explore the flux pinning. The measurements were performed with a superconducting quantum interference magnetometer. The applied magnetic field was 300 G - 600 G and the measured time at each temperature was 1 × 104 sec. M versus 1nt shows a linear behavior for t ≥ 3600 sec. The data were analyzed in the framework of the flux pinning model of Anderson-Kim. The analyses give the activation energy of U(5K) ≈ 20 mev, and the critical current density based on Jc(T) ∝ [dM/dlnt] × [U/kT] shows Jc ∝ (1-t)m, with the exponent m ≈ 2.0. The results are discussed.

Original languageEnglish
Pages (from-to)2067-2068
Number of pages2
JournalPhysica B: Physics of Condensed Matter
Volume194-196
Issue numberPART 2
DOIs
Publication statusPublished - 1994 Feb 2

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Magnetic relaxation
Flux pinning
flux pinning
magnetic relaxation
Magnetic fields
Magnetometers
magnetic fields
magnetometers
Magnetization
critical current
Activation energy
exponents
current density
activation energy
interference
Temperature
magnetization
temperature

ASJC Scopus subject areas

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

Cite this

Low field magnetic relaxation of superconducting C60Rb3. / Wang, L. M.; Yang, Hong-Chang; Hwang, J. H.; Mou, C. Y.; Horng, Herng-Er.

In: Physica B: Physics of Condensed Matter, Vol. 194-196, No. PART 2, 02.02.1994, p. 2067-2068.

Research output: Contribution to journalArticle

Wang, L. M. ; Yang, Hong-Chang ; Hwang, J. H. ; Mou, C. Y. ; Horng, Herng-Er. / Low field magnetic relaxation of superconducting C60Rb3. In: Physica B: Physics of Condensed Matter. 1994 ; Vol. 194-196, No. PART 2. pp. 2067-2068.
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