Ultrasonic velocity measurements on PrBa2Cu3O7-δ (δ = 0.1, 0.5)

Ahmad Kamal Yahya, Roslan Abd. Shukor

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Ultrasonic longitudinal and shear velocities in polycrystalline PrBa2Cu3O7-δ with an oxygen content of O6.9 and O6.5 were measured at 10 MHz between 80 and 300 K. Longitudinal velocity hysteresis was observed between 190 and 230 K in the O6.9 (orthorhombic) sample but not in the O6.5 (tetragonal) sample. Micrographs obtained from scanning electron microscopy showed no noticeable difference in the micro structure of the samples under investigation. These results are explained in terms of possible oxygen ordering. By comparing our results with previous ultrasonic studies on the related materials which show superconducting properties, it is concluded that the oxygen content strongly influence the elastic property and the longitudinal velocity hysteresis.

Original languageEnglish
Pages (from-to)237-243
Number of pages7
JournalPhysica B: Condensed Matter
Volume252
Issue number3
Publication statusPublished - 31 Jul 1998

Fingerprint

Ultrasonic velocity measurement
velocity measurement
ultrasonics
Oxygen
Hysteresis
oxygen
Ultrasonics
hysteresis
elastic properties
shear
microstructure
Microstructure
Scanning electron microscopy
scanning electron microscopy

Keywords

  • Oxygen ordering
  • PrBaCuO
  • Ultrasonic velocity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Ultrasonic velocity measurements on PrBa2Cu3O7-δ (δ = 0.1, 0.5). / Yahya, Ahmad Kamal; Abd. Shukor, Roslan.

In: Physica B: Condensed Matter, Vol. 252, No. 3, 31.07.1998, p. 237-243.

Research output: Contribution to journalArticle

@article{4e8e76099ae14807a9e92bc0ba70c7b8,
title = "Ultrasonic velocity measurements on PrBa2Cu3O7-δ (δ = 0.1, 0.5)",
abstract = "Ultrasonic longitudinal and shear velocities in polycrystalline PrBa2Cu3O7-δ with an oxygen content of O6.9 and O6.5 were measured at 10 MHz between 80 and 300 K. Longitudinal velocity hysteresis was observed between 190 and 230 K in the O6.9 (orthorhombic) sample but not in the O6.5 (tetragonal) sample. Micrographs obtained from scanning electron microscopy showed no noticeable difference in the micro structure of the samples under investigation. These results are explained in terms of possible oxygen ordering. By comparing our results with previous ultrasonic studies on the related materials which show superconducting properties, it is concluded that the oxygen content strongly influence the elastic property and the longitudinal velocity hysteresis.",
keywords = "Oxygen ordering, PrBaCuO, Ultrasonic velocity",
author = "Yahya, {Ahmad Kamal} and {Abd. Shukor}, Roslan",
year = "1998",
month = "7",
day = "31",
language = "English",
volume = "252",
pages = "237--243",
journal = "Physica B: Condensed Matter",
issn = "0921-4526",
publisher = "Elsevier",
number = "3",

}

TY - JOUR

T1 - Ultrasonic velocity measurements on PrBa2Cu3O7-δ (δ = 0.1, 0.5)

AU - Yahya, Ahmad Kamal

AU - Abd. Shukor, Roslan

PY - 1998/7/31

Y1 - 1998/7/31

N2 - Ultrasonic longitudinal and shear velocities in polycrystalline PrBa2Cu3O7-δ with an oxygen content of O6.9 and O6.5 were measured at 10 MHz between 80 and 300 K. Longitudinal velocity hysteresis was observed between 190 and 230 K in the O6.9 (orthorhombic) sample but not in the O6.5 (tetragonal) sample. Micrographs obtained from scanning electron microscopy showed no noticeable difference in the micro structure of the samples under investigation. These results are explained in terms of possible oxygen ordering. By comparing our results with previous ultrasonic studies on the related materials which show superconducting properties, it is concluded that the oxygen content strongly influence the elastic property and the longitudinal velocity hysteresis.

AB - Ultrasonic longitudinal and shear velocities in polycrystalline PrBa2Cu3O7-δ with an oxygen content of O6.9 and O6.5 were measured at 10 MHz between 80 and 300 K. Longitudinal velocity hysteresis was observed between 190 and 230 K in the O6.9 (orthorhombic) sample but not in the O6.5 (tetragonal) sample. Micrographs obtained from scanning electron microscopy showed no noticeable difference in the micro structure of the samples under investigation. These results are explained in terms of possible oxygen ordering. By comparing our results with previous ultrasonic studies on the related materials which show superconducting properties, it is concluded that the oxygen content strongly influence the elastic property and the longitudinal velocity hysteresis.

KW - Oxygen ordering

KW - PrBaCuO

KW - Ultrasonic velocity

UR - http://www.scopus.com/inward/record.url?scp=0032141047&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032141047&partnerID=8YFLogxK

M3 - Article

VL - 252

SP - 237

EP - 243

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

IS - 3

ER -