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Structure and the location of the morphotropic phase boundary region in (1-x)[Pb(Mg1/3Nb2/3)O3]-xPbTiO3

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Published 16 November 2001 • Published under licence by IOP Publishing Ltd
, , Citation Akhilesh Kumar Singh and Dhananjai Pandey 2001 J. Phys.: Condens. Matter 13 L931 DOI 10.1088/0953-8984/13/48/102

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1 School of Materials Science and Technology, Institute of Technology, Banaras Hindu University, Varanasi 221005, India

Dates

  1. Received 17 October 2001
  2. Published

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0953-8984/13/48/L931

Abstract

The structure of (1-x)[Pb(Mg1/3Nb2/3)O3]-xPbTiO3 is tetragonal and rhombohedral for x⩾0.35 and x⩽0.30, respectively. The intrinsic width of the morphotropic phase boundary region (0.30<x<0.35) is an order of magnitude smaller than hitherto believed. The structure of the morphotropic phase for x = 0.34 is shown to be monoclinic with space group Pm and not a mixture of rhombohedral and tetragonal phases.

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10.1088/0953-8984/13/48/102