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Magnetic phase transitions in 90 k superconductors HoBaCuOand GdBaCuOobserved by ZFSR

Japanese Journal of Applied Physics, ISSN: 1347-4065, Vol: 27, Issue: 1A, Page: L94-L97
1988
  • 15
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Metrics Details

  • Citations
    15
    • Citation Indexes
      15
  • Captures
    4

Article Description

Freezing of holmium magnetic moments was observed below 3 K in a 90 K superconductor HoBaCuOby zero-field positive muon spin relaxation (ZF-μSR) measurements. The ZF-μSR function revealed a marked change of μlocal field from a critically fluctuating regime (4–7 K) to a quasi-static regime below 3 K (of nearly Gaussian distribution). The observation indicates that holmium magnetic moments are short-range ordered around 2 K. In contrast, a 90 K superconductor GdBaCuOshowed a zero-field spin precession at 2 K, indicating long-range ordering of gadolinium magnetic moments. © 1988 The Japan Society of Applied Physics.

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