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A Y-89 NMR-STUDY OF YBA2CU4O8
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UNSPECIFIED (1991) A Y-89 NMR-STUDY OF YBA2CU4O8. In: 3RD INTERNATIONAL CONF ON MATERIALS AND MECHANISMS OF SUPERCONDUCTIVITY : HIGH TEMPERATURE SUPERCONDUCTORS, KANAZAWA, JAPAN, JUL 22-26, 1991. Published in: PHYSICA C, 185 (Part 2). pp. 1219-1220. ISSN 0921-4534.
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Abstract
High resolution Y-89 NMR shift and relaxation time measurements on YBa2Cu4O8 have been performed between 80 and 380K. The shift at room temperature, approximately -50ppm, is somewhat smaller than for fully oxygenated YBa2Cu3O7-delta and the relaxation time is longer. Below approximately 200K the shift starts to decrease rapidly, behaving very like YBa2Cu3O6.8. A comparison of the shift with the Cu-63 perpendicular-to (2) data shows that they have the same temperature dependence, indicating a common susceptibility, and that the ratio of the Cu-63 perpendicular-to (2) to Y-89 hyperfine coupling constants is the same as for YBa2Cu3O7-delta. The temperature dependence of the relaxation behaviour is not Korringa like but is similar to that of YBa2Cu3O6.8.
Item Type: | Conference Item (UNSPECIFIED) | ||||
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Subjects: | Q Science > QC Physics | ||||
Journal or Publication Title: | PHYSICA C | ||||
Publisher: | ELSEVIER SCIENCE BV | ||||
ISSN: | 0921-4534 | ||||
Official Date: | 1 December 1991 | ||||
Dates: |
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Volume: | 185 | ||||
Number: | Part 2 | ||||
Number of Pages: | 2 | ||||
Page Range: | pp. 1219-1220 | ||||
Publication Status: | Published | ||||
Title of Event: | 3RD INTERNATIONAL CONF ON MATERIALS AND MECHANISMS OF SUPERCONDUCTIVITY : HIGH TEMPERATURE SUPERCONDUCTORS | ||||
Location of Event: | KANAZAWA, JAPAN | ||||
Date(s) of Event: | JUL 22-26, 1991 |
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