Acoustic study on polycrystalline Pr2-xCexCuO 4 (x = 0 and 0.15)

Chong Tet Vui, Roslan Abd. Shukor

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The acoustic properties of Pr2-xCexCuO4 (x = 0 and 0.15) samples are measured using the pulsed-echo-overlap method between 5-10 MHz. An elastic anomaly signifying a lattice softening tendency towards lower temperatures is observed in the x = 0 sample between 220-250 K for longitudinal velocities but not observed in the shear mode, nor the x = 0.15 sample (both longitudinal and shear mode). The electron-phonon coupling constant is calculated. It is suggested that the softening tendency in the x = 0 sample between 220-250 K is due to the weak structural distortion induced in the magnetic transition.

Original languageEnglish
Pages (from-to)301-308
Number of pages8
JournalModern Physics Letters B
Volume18
Issue number7-8
DOIs
Publication statusPublished - 30 Mar 2004

Fingerprint

Acoustic properties
Acoustics
acoustics
Electrons
Softening
softening
tendencies
shear
Temperature
acoustic properties
Phonon
Anomaly
Overlap
echoes
Electron
anomalies
electrons

Keywords

  • Debye temperature
  • Electron-phonon coupling
  • Superconductor
  • Ultrasonic velocity

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Statistical and Nonlinear Physics
  • Mathematical Physics

Cite this

Acoustic study on polycrystalline Pr2-xCexCuO 4 (x = 0 and 0.15). / Vui, Chong Tet; Abd. Shukor, Roslan.

In: Modern Physics Letters B, Vol. 18, No. 7-8, 30.03.2004, p. 301-308.

Research output: Contribution to journalArticle

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