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Infrared study of relevance of Nd<inf>2</inf>CuO<inf>4</inf> structure to superconductivity of La-Sr-Cu-O system
Date Issued
01-09-1999
Author(s)
Rambabu, D.
Muraleedharan, K.
Abstract
A comparative study of the infrared spectra of Nd2Cu1-xAgxO4 and La1.8Sr0.2Cu1-xAgxO4 is reported. It is shown that the appearance of an absorption peak at approx. 680 cm-1 is due to local distortions around the Ag impurities, and the appearance of this peak need not imply a structural transformation from Nd2CuO4 type of K2NiF4 type. It is shown that Nd2CuO4 structure is not important for the superconductivity of La-Sr-Cu-O system.
Volume
34