Solid-State Epitaxial Effects in Structurally Diphasic Xerogel of Pb(Mg1/3Nb2/3)O3 |
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Authors: | P. Ravindranathan Sridhar Komarneni Rustum Roy |
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Affiliation: | Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802. |
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Abstract: | Lead magnesium niobate (PMN), Pb(Mg1/3Nb2/3)O3, with perovskite structure has been prepared using structurally diphasic PMN gels. The diphasic gels were made using various concentrations of perovskite PMN seeds. The unseeded gel calcined at 775°C for 2 h gave ∼98% of perovskite PMN phase. The use of 1% PMN perovskite seed not only led to a pure perovskite phase but also lowered the crystallization temperature of these gels by about 75°C. These results show that isostructural seeding helps to lower the crystallization temperature of perovskite PMN phase. |
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Keywords: | xerogels epitaxy niobates lead magnesium |
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