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NMR EVIDENCE FOR COMMON MAGNETIC-BEHAVIOR IN YBA2CU4O8 AND YBA2CU3O7-DELTA
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UNSPECIFIED (1991) NMR EVIDENCE FOR COMMON MAGNETIC-BEHAVIOR IN YBA2CU4O8 AND YBA2CU3O7-DELTA. PHYSICA C, 179 (4-6). pp. 311-316. ISSN 0921-4534.
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Abstract
High resolution Y-89 NMR measurements in YBa2Cu4O8 (Y124) have shown that the shift has the same value and same temperature dependence as that of YBa2Cu3O7-delta with the same T(c) (delta = 0.2). This indicates that T(c) and the Y-89 shift are strongly correlated and suggests that T(c) is closely related to the susceptibility in the Cu-O planes. The normal state NMR data provide further evidence in favour of the one-component model in which only a single uniform spin susceptibility needs to be considered in a unit cell of the Cu-O planes in Y-Ba-Cu-O system. The ratio of 63Cu perpendicular-to (2) to Y-89 shifts is found to be -11.5 +/- 0.6 for Y124 which is to within the experimental error the same as those for the 90 K and 60 K 123 phases, indicating a constant ratio of the 63Cu perpendicular-to (2) to Y-89 hyperfine coupling in the Y-Ba-Cu-O system.
Item Type: | Journal Article | ||||
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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 September 1991 | ||||
Dates: |
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Volume: | 179 | ||||
Number: | 4-6 | ||||
Number of Pages: | 6 | ||||
Page Range: | pp. 311-316 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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