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NMR EVIDENCE FOR THE O-T STRUCTURAL TRANSITION IN YBA2(CU1-XMX)3O7-DELTA (M=CO, AL AND GA)
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UNSPECIFIED (1993) NMR EVIDENCE FOR THE O-T STRUCTURAL TRANSITION IN YBA2(CU1-XMX)3O7-DELTA (M=CO, AL AND GA). PHYSICA C, 216 (3-4). pp. 491-494. ISSN 0921-4534.
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Abstract
Studies of Fe, Co, Al and Ga substitution for Cu in YBa2Cu3O7-delta have reported contradictory conclusions about whether micro-twinning or a true orthorhombic-to-tetragonal transition occurs at approximately 2.5% substitution. Y-89 NMR has been used to study the structural change with doping of Co, Al or Ga for Cu in YBa2Cu3O7-delta. NMR is a microscopic probe and the chemical shift is sensitive to the local atomic arrangements within the first few neighbour shells. For these substitutions, the changes in Y-89 chemical shift provide evidence which suggests that there is an orthorhombic-to-tetragonal transition.
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 November 1993 | ||||
Dates: |
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Volume: | 216 | ||||
Number: | 3-4 | ||||
Number of Pages: | 4 | ||||
Page Range: | pp. 491-494 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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