Ultrasonic measurements on polycrystalline YBa2Cu3O7

Keun J. Sun; Moises Levy; Bimal K. Sarma; P. H. Hor; R. L. Meng; Y. Q. Wang; C. W. Chu

doi:10.1016/0375-9601(88)90686-X

Ultrasonic measurements on polycrystalline YBa₂Cu₃O₇

Keun J. Sun, Moises Levy, Bimal K. Sarma, P. H. Hor, R. L. Meng, Y. Q. Wang, C. W. Chu

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Abstract

Temperature dependent ultrasonic attenuation data of polycrystalline YBa₂Cu₃O₇ at 10 MHz show a plateau between 220 and 250 K, and slope changes at 263, 135 and 97 K. The attenuation does not display a sharp decrease at T_c as would be described in the BCS theory. Around 255 K, the sound velocity in the sample increases from its room temperature value by more than 10%.

Original language	English
Pages (from-to)	541-544
Number of pages	4
Journal	Physics Letters A
Volume	131
Issue number	9
DOIs	https://doi.org/10.1016/0375-9601(88)90686-X
Publication status	Published - 1988 Sept 12

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1016/0375-9601(88)90686-X

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@article{86ff1bb1b2e04da8a3bb3b420f238781,

title = "Ultrasonic measurements on polycrystalline YBa2Cu3O7",

abstract = "Temperature dependent ultrasonic attenuation data of polycrystalline YBa2Cu3O7 at 10 MHz show a plateau between 220 and 250 K, and slope changes at 263, 135 and 97 K. The attenuation does not display a sharp decrease at Tc as would be described in the BCS theory. Around 255 K, the sound velocity in the sample increases from its room temperature value by more than 10%.",

author = "Sun, {Keun J.} and Moises Levy and Sarma, {Bimal K.} and Hor, {P. H.} and Meng, {R. L.} and Wang, {Y. Q.} and Chu, {C. W.}",

note = "Funding Information: 2 Research supported by Air Force Office Scientific Research Funding Information: under Grant No. AFOSR 84-0350. Research supported by the National Science Foundation under Grant No DMR 8204174. Also at the Division of Materials Research, NSF, Washington, DC 20550, USA.",

year = "1988",

month = sep,

day = "12",

doi = "10.1016/0375-9601(88)90686-X",

language = "English",

volume = "131",

pages = "541--544",

journal = "Physics Letters A",

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T1 - Ultrasonic measurements on polycrystalline YBa2Cu3O7

AU - Sun, Keun J.

AU - Levy, Moises

AU - Sarma, Bimal K.

AU - Hor, P. H.

AU - Meng, R. L.

AU - Wang, Y. Q.

AU - Chu, C. W.

N1 - Funding Information: 2 Research supported by Air Force Office Scientific Research Funding Information: under Grant No. AFOSR 84-0350. Research supported by the National Science Foundation under Grant No DMR 8204174. Also at the Division of Materials Research, NSF, Washington, DC 20550, USA.

PY - 1988/9/12

Y1 - 1988/9/12

N2 - Temperature dependent ultrasonic attenuation data of polycrystalline YBa2Cu3O7 at 10 MHz show a plateau between 220 and 250 K, and slope changes at 263, 135 and 97 K. The attenuation does not display a sharp decrease at Tc as would be described in the BCS theory. Around 255 K, the sound velocity in the sample increases from its room temperature value by more than 10%.

AB - Temperature dependent ultrasonic attenuation data of polycrystalline YBa2Cu3O7 at 10 MHz show a plateau between 220 and 250 K, and slope changes at 263, 135 and 97 K. The attenuation does not display a sharp decrease at Tc as would be described in the BCS theory. Around 255 K, the sound velocity in the sample increases from its room temperature value by more than 10%.

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EP - 544

JO - Physics Letters A

JF - Physics Letters A

IS - 9

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Ultrasonic measurements on polycrystalline YBa₂Cu₃O₇

Abstract

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