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The Raman Spectra of Perovskite-Structured Alkaline Earth Hafnates

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The perovskite-structured titanates and zirconates have been extensively investigated using infrared and Raman spectroscopy. However, very few papers have been published related to the vibrational spectra of hafnium-containing compounds. McDevitt and Baun reported the infrared absorption spectrum of hafnium dioxide, while Perry investigated PbHfO3 and SrHfO3 by the infrared reflection technique. This lack of data is unusual when one considers the potential electronic and high temperature applications of such hafnium-containing compounds. One must have adequate techniques for characterizing and identifying a material before one can prepare the material with optimum desired properties. Therefore, in this investigation we have measured the Raman spectra of several perovskite-structured alkaline earth hafnates (BaHfO3, CaHfO3, and SrHfO3) and analyzed the resulting spectra on the basis of their crystal structures.

Keywords: Alkaline earth hafnates; Barium hafnate; Calcium hafnate; Raman spectra; Strontium hafnate

Document Type: Short Communication


Affiliations: Division of Engineering and Science, New York State College of Ceramics, Alfred University, Alfred, New York 14802

Publication date: May 1, 1976

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