Anomalous elastic response of HoBa2-xHoxCu 3O7-δ ceramic superconductors

A. K. Yahya, N. A. Hamid, R. Abd-Shukor, H. Imad

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13 Citations (Scopus)


Anomalous elastic response has been observed in superconducting HoBa 2-xHoxCu3O7-δ (x = 0 and 0.15) from temperature dependent ultrasonic velocity measurements between 80 and 270 K. Longitudinal velocity of superconducting HoBa2Cu3O 7-δ (Tczero ∼ 89 K) showed an anomaly around 230 K indicating a pronounced lattice stiffening. Superconducting HoBa 1.85Ho0.15Cu3O7-δ (T czero ∼ 70 K) also showed a similar longitudinal velocity anomaly around the same temperature. No anomaly was observed for oxygen-reduced non-superconducting HoBa2Cu3O7-δ. Temperature dependent shear velocity profiles and absolute velocity measurements at 80 K are also reported and the influence of oxygen content on elastic properties is discussed.

Original languageEnglish
Pages (from-to)1597-1601
Number of pages5
JournalCeramics International
Issue number7
Publication statusPublished - 08 Sep 2004
Event3rd Asian Meeting on Electroceramics - Singapore, Singapore
Duration: 07 Dec 200311 Dec 2003


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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