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

A. K. Yahya, N. A. Hamid, Roslan Abd. Shukor, H. Imad

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

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
Volume30
Issue number7
DOIs
Publication statusPublished - 2004

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Ceramic superconductors
Ultrasonic velocity measurement
Oxygen
Velocity measurement
Temperature

Keywords

  • A. Powders: solid state reaction
  • B. Microstructure-final
  • D. Oxide superconductors
  • Elastic properties

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Anomalous elastic response of HoBa2-xHoxCu 3O7-δ ceramic superconductors. / Yahya, A. K.; Hamid, N. A.; Abd. Shukor, Roslan; Imad, H.

In: Ceramics International, Vol. 30, No. 7, 2004, p. 1597-1601.

Research output: Contribution to journalArticle

Yahya, A. K. ; Hamid, N. A. ; Abd. Shukor, Roslan ; Imad, H. / Anomalous elastic response of HoBa2-xHoxCu 3O7-δ ceramic superconductors. In: Ceramics International. 2004 ; Vol. 30, No. 7. pp. 1597-1601.
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