A Y-89 NMR-STUDY OF YBA2CU4O8
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.Full text not available from this repository.
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)|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||PHYSICA C|
|Publisher:||ELSEVIER SCIENCE BV|
|Official Date:||1 December 1991|
|Number of Pages:||2|
|Page Range:||pp. 1219-1220|
|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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