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Sound velocity in perovskite manganites La0.67Ca0.33MnO3 with different grain sizes

The longitudinal and shear sound velocities in colossal magnetoresistive material La0.67Ca0.33MnO3 sintered at 1100, 1250 and 1350 1C with average grain size 1, 3 and 5 mm, respectively, have been measured from 80 to 300K using the pulse-echo-overlap method.A pronounced increase in the longitudinal...

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Main Authors: Ewe, L. S., Hamadneh, Imad, Salamab, Hazar A., Abd Shukor, Roslan
Format: Article
Language:English
English
Published: Elsevier 2008
Online Access:http://psasir.upm.edu.my/id/eprint/5655/1/Sound%20velocity%20in%20perovskite%20manganites%20La0.pdf
http://psasir.upm.edu.my/id/eprint/5655/
http://dx.doi.org/10.1016/j.physb.2007.12.022
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spelling my.upm.eprints.56552015-09-15T01:45:01Z http://psasir.upm.edu.my/id/eprint/5655/ Sound velocity in perovskite manganites La0.67Ca0.33MnO3 with different grain sizes Ewe, L. S. Hamadneh, Imad Salamab, Hazar A. Abd Shukor, Roslan The longitudinal and shear sound velocities in colossal magnetoresistive material La0.67Ca0.33MnO3 sintered at 1100, 1250 and 1350 1C with average grain size 1, 3 and 5 mm, respectively, have been measured from 80 to 300K using the pulse-echo-overlap method.A pronounced increase in the longitudinal sound velocity was observed in all samples around the insulator–metal transition temperature (TIM272 K). XRD patterns showed the orthorhombic structure for all samples. The longitudinal and shear velocities showed the largest hysteresis for the sample with 3 mm grain size. A step-like shear sound velocity anomaly near 120K during cooling or warming was observed to be dependent on the grain size. Elsevier 2008 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/5655/1/Sound%20velocity%20in%20perovskite%20manganites%20La0.pdf Ewe, L. S. and Hamadneh, Imad and Salamab, Hazar A. and Abd Shukor, Roslan (2008) Sound velocity in perovskite manganites La0.67Ca0.33MnO3 with different grain sizes. Physica B, 403 (13-16). pp. 2394-2398. ISSN 2394–2398 http://dx.doi.org/10.1016/j.physb.2007.12.022 10.1016/j.physb.2007.12.022 English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description The longitudinal and shear sound velocities in colossal magnetoresistive material La0.67Ca0.33MnO3 sintered at 1100, 1250 and 1350 1C with average grain size 1, 3 and 5 mm, respectively, have been measured from 80 to 300K using the pulse-echo-overlap method.A pronounced increase in the longitudinal sound velocity was observed in all samples around the insulator–metal transition temperature (TIM272 K). XRD patterns showed the orthorhombic structure for all samples. The longitudinal and shear velocities showed the largest hysteresis for the sample with 3 mm grain size. A step-like shear sound velocity anomaly near 120K during cooling or warming was observed to be dependent on the grain size.
format Article
author Ewe, L. S.
Hamadneh, Imad
Salamab, Hazar A.
Abd Shukor, Roslan
spellingShingle Ewe, L. S.
Hamadneh, Imad
Salamab, Hazar A.
Abd Shukor, Roslan
Sound velocity in perovskite manganites La0.67Ca0.33MnO3 with different grain sizes
author_facet Ewe, L. S.
Hamadneh, Imad
Salamab, Hazar A.
Abd Shukor, Roslan
author_sort Ewe, L. S.
title Sound velocity in perovskite manganites La0.67Ca0.33MnO3 with different grain sizes
title_short Sound velocity in perovskite manganites La0.67Ca0.33MnO3 with different grain sizes
title_full Sound velocity in perovskite manganites La0.67Ca0.33MnO3 with different grain sizes
title_fullStr Sound velocity in perovskite manganites La0.67Ca0.33MnO3 with different grain sizes
title_full_unstemmed Sound velocity in perovskite manganites La0.67Ca0.33MnO3 with different grain sizes
title_sort sound velocity in perovskite manganites la0.67ca0.33mno3 with different grain sizes
publisher Elsevier
publishDate 2008
url http://psasir.upm.edu.my/id/eprint/5655/1/Sound%20velocity%20in%20perovskite%20manganites%20La0.pdf
http://psasir.upm.edu.my/id/eprint/5655/
http://dx.doi.org/10.1016/j.physb.2007.12.022
_version_ 1643823254228434944
score 13.211869

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