A positron annihilation study of the decomposition of Y1Ba2Cu3O7−x

Vasumathi, D.; Sundar, C. S.; Bharathi, A.; Sood, A. K.; Hariharan, Y.

doi:10.1016/0921-4534(90)90498-4

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Defects Aml Structural Studies1

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Cited by 9 publications

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“…The sensitivity of positron annihilation characteristics to the various ordered phases of Y 1: 2:3 has been used in the study of the decomposition of off-stoichiometric Y 1:2:3, occurring on ageing within the two-phase region (Vasumathi et al 1990). Apart from the study of oxygen defects in Y 1:2:3, the intercalation of oxygen in Bi-Sr-Ca-Cu-O (Sundar et al 1991c) and vacancy defects in La-Sr-Cu-O (Sundar et al 1992) have also been investigated.…”

Section: Defects Aml Structural Studiesmentioning

confidence: 99%

Positron annihilation spectroscopy in materials science

Sundar

1994

Bull. Mater. Sci.

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The application of positron annihilation spectroscopy to the study of defects in materials is illustrated through several examples drawn from our work. These include the study of vacancy clustering in metals, clustering of He atoms to form bubbles, and solute clustering in alloys. Results of studies on novel materials such as quasicrystals, cuprate superconductors and fullerenes are also presented.

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Section: Defects Aml Structural Studiesmentioning

confidence: 99%