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...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English English |
| Published: |
Elsevier
2008
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/5655/ http://psasir.upm.edu.my/id/eprint/5655/1/Sound%20velocity%20in%20perovskite%20manganites%20La0.pdf |
| _version_ | 1848840159342100480 |
|---|---|
| author | Ewe, L. S. Hamadneh, Imad Salamab, Hazar A. Abd Shukor, Roslan |
| author_facet | Ewe, L. S. Hamadneh, Imad Salamab, Hazar A. Abd Shukor, Roslan |
| author_sort | Ewe, L. S. |
| building | UPM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T07:22:55Z |
| format | Article |
| id | upm-5655 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T07:22:55Z |
| publishDate | 2008 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-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 |
| spellingShingle | Ewe, L. S. Hamadneh, Imad Salamab, Hazar A. Abd Shukor, Roslan Sound velocity in perovskite manganites La0.67Ca0.33MnO3 with different grain sizes |
| title | 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_short | 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 |
| url | http://psasir.upm.edu.my/id/eprint/5655/ http://psasir.upm.edu.my/id/eprint/5655/ http://psasir.upm.edu.my/id/eprint/5655/ http://psasir.upm.edu.my/id/eprint/5655/1/Sound%20velocity%20in%20perovskite%20manganites%20La0.pdf |