Elastic constant anomalies in sinter-forged high-Tc superconductor YBa2Cu3O7 - δ

Z. Zhao; S. Adenwalla; A. Moreau; J. B. Ketterson; Q. Robinson; D. L. Johnson; S. J. Hwu; K. R. Poeppelmeier; M. F. Xu; Y. Hong; M. Levy; Bimal K. Sarma

doi:10.1016/0022-5088(89)90522-5

Elastic constant anomalies in sinter-forged high-T_c superconductor YBa₂Cu₃O_{7 - δ}

Z. Zhao^*, S. Adenwalla, A. Moreau, J. B. Ketterson, Q. Robinson, D. L. Johnson, S. J. Hwu, K. R. Poeppelmeier, M. F. Xu, Y. Hong, M. Levy, Bimal K. Sarma

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The ultrasound velocity in the sinter-forged YBa₂Cu₃O_{7 - δ} superconductor was measured and the results showed evident anomalies as well as anisotropies. Both longitudinal and shear wave velocity along the c axis (the forging axis) showed a distinct thermal hysteresis from 65 K to 260 K. The velocity change ΔV V from room temperature to 4 K was 1.5%. The sound velocity along the "basal plane" reached a maximum around 160 K. No distinct thermal hysteresis was observed. ΔV V from room temperature to 4 K was 1%. All of these velocities were measured while sweeping the magnetic field up to 9 T at fixed temperatures of 4 K and 86 K respectively. No velocity change was observed. The shear wave velocity behaved similarly at 9 T during the thermal cycling between room temperature and 4 K.

Original language	English (US)
Pages (from-to)	451-454
Number of pages	4
Journal	Journal of The Less-Common Metals
Volume	149
Issue number	C
DOIs	https://doi.org/10.1016/0022-5088(89)90522-5
State	Published - Apr 15 1989

ASJC Scopus subject areas

Engineering(all)

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title = "Elastic constant anomalies in sinter-forged high-Tc superconductor YBa2Cu3O7 - δ",

abstract = "The ultrasound velocity in the sinter-forged YBa2Cu3O7 - δ superconductor was measured and the results showed evident anomalies as well as anisotropies. Both longitudinal and shear wave velocity along the c axis (the forging axis) showed a distinct thermal hysteresis from 65 K to 260 K. The velocity change ΔV V from room temperature to 4 K was 1.5%. The sound velocity along the {"}basal plane{"} reached a maximum around 160 K. No distinct thermal hysteresis was observed. ΔV V from room temperature to 4 K was 1%. All of these velocities were measured while sweeping the magnetic field up to 9 T at fixed temperatures of 4 K and 86 K respectively. No velocity change was observed. The shear wave velocity behaved similarly at 9 T during the thermal cycling between room temperature and 4 K.",

author = "Z. Zhao and S. Adenwalla and A. Moreau and Ketterson, {J. B.} and Q. Robinson and Johnson, {D. L.} and Hwu, {S. J.} and Poeppelmeier, {K. R.} and Xu, {M. F.} and Y. Hong and M. Levy and Sarma, {Bimal K.}",

note = "Funding Information: This work was supported by NSF Grant DMR-86-02857 at Northwestern University and ONR Grant N00014-8%K0046 at the University of Wisconsin-Milwaukee.",

year = "1989",

month = apr,

day = "15",

doi = "10.1016/0022-5088(89)90522-5",

language = "English (US)",

volume = "149",

pages = "451--454",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

number = "C",

}

Elastic constant anomalies in sinter-forged high-T_c superconductor YBa₂Cu₃O_{7 - δ}. / Zhao, Z.; Adenwalla, S.; Moreau, A.; Ketterson, J. B.; Robinson, Q.; Johnson, D. L.; Hwu, S. J.; Poeppelmeier, K. R.; Xu, M. F.; Hong, Y.; Levy, M.; Sarma, Bimal K.

In: Journal of The Less-Common Metals, Vol. 149, No. C, 15.04.1989, p. 451-454.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Elastic constant anomalies in sinter-forged high-Tc superconductor YBa2Cu3O7 - δ

AU - Zhao, Z.

AU - Adenwalla, S.

AU - Moreau, A.

AU - Ketterson, J. B.

AU - Robinson, Q.

AU - Johnson, D. L.

AU - Hwu, S. J.

AU - Poeppelmeier, K. R.

AU - Xu, M. F.

AU - Hong, Y.

AU - Levy, M.

AU - Sarma, Bimal K.

N1 - Funding Information: This work was supported by NSF Grant DMR-86-02857 at Northwestern University and ONR Grant N00014-8%K0046 at the University of Wisconsin-Milwaukee.

PY - 1989/4/15

Y1 - 1989/4/15

N2 - The ultrasound velocity in the sinter-forged YBa2Cu3O7 - δ superconductor was measured and the results showed evident anomalies as well as anisotropies. Both longitudinal and shear wave velocity along the c axis (the forging axis) showed a distinct thermal hysteresis from 65 K to 260 K. The velocity change ΔV V from room temperature to 4 K was 1.5%. The sound velocity along the "basal plane" reached a maximum around 160 K. No distinct thermal hysteresis was observed. ΔV V from room temperature to 4 K was 1%. All of these velocities were measured while sweeping the magnetic field up to 9 T at fixed temperatures of 4 K and 86 K respectively. No velocity change was observed. The shear wave velocity behaved similarly at 9 T during the thermal cycling between room temperature and 4 K.

AB - The ultrasound velocity in the sinter-forged YBa2Cu3O7 - δ superconductor was measured and the results showed evident anomalies as well as anisotropies. Both longitudinal and shear wave velocity along the c axis (the forging axis) showed a distinct thermal hysteresis from 65 K to 260 K. The velocity change ΔV V from room temperature to 4 K was 1.5%. The sound velocity along the "basal plane" reached a maximum around 160 K. No distinct thermal hysteresis was observed. ΔV V from room temperature to 4 K was 1%. All of these velocities were measured while sweeping the magnetic field up to 9 T at fixed temperatures of 4 K and 86 K respectively. No velocity change was observed. The shear wave velocity behaved similarly at 9 T during the thermal cycling between room temperature and 4 K.

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EP - 454

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

IS - C

ER -

Elastic constant anomalies in sinter-forged high-T_c superconductor YBa₂Cu₃O_{7 - δ}

Abstract

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