Jiang, W. and Yeh, N.-C. and Reed, D. S. and Kriplani, U. and Tombrello, T. A. and Rice, A. P. and Holtzberg, F. (1993) Vortex-solid melting and depinning in superconducting Y-Ba-Cu-O single crystals irradiated by 3-MeV protons. Physical Review B, 47 (13). pp. 8308-8311. ISSN 0163-1829. doi:10.1103/PhysRevB.47.8308. https://resolver.caltech.edu/CaltechAUTHORS:JIAprb93
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Abstract
Compositionally modulated thin films of Cu and Y were prepared in an ultrahigh-vacuum dc ion-beam deposition chamber. The amorphization reaction was monitored by in situ x-ray-diffraction measurements. Growth of amorphous Cu1-xYx is observed at room temperature with the initial formation of a Cu-rich amorphous phase. Further annealing in the presence of unreacted Y leads to Y enrichment of the amorphous phase. Growth of crystalline CuY is observed for T=469 K. Transmission-electron-microscopy measurements provide real-space imaging of the amorphous interlayer and growth morphology. Models are developed, incorporating metastable interfacial and bulk free-energy diagrams, for the early stage of the amorphization reaction.
Item Type: | Article | ||||||||||
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Additional Information: | © 1993 The American Physical Society Received 14 December 1992 We thank Nils Asplund for his technical assistance. This work is jointly supported by ONR Grant No. N00014-91-1556, NASA/OAET, IBM-Caltech Cooperative Research Fund, and NSF Grant No. DMR90-11230. | ||||||||||
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Issue or Number: | 13 | ||||||||||
DOI: | 10.1103/PhysRevB.47.8308 | ||||||||||
Record Number: | CaltechAUTHORS:JIAprb93 | ||||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:JIAprb93 | ||||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||
ID Code: | 7065 | ||||||||||
Collection: | CaltechAUTHORS | ||||||||||
Deposited By: | Archive Administrator | ||||||||||
Deposited On: | 07 Jan 2007 | ||||||||||
Last Modified: | 08 Nov 2021 20:39 |
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