Adaptive ferroelectric states in systems with low domain wall energy: Tetragonal microdomains

dc.contributorVirginia Tech. Department of Materials Science and Engineeringen
dc.contributorRutgers University. Department of Ceramic and Materials Engineeringen
dc.contributor.authorJin, Y. M.en
dc.contributor.authorWang, Yu. U.en
dc.contributor.authorKhachaturyan, Armen G.en
dc.contributor.authorLi, Jiefangen
dc.contributor.authorViehland, Dwight D.en
dc.contributor.departmentMaterials Science and Engineering (MSE)en
dc.description.abstractFerroelectric and ferroelastic phases with very low domain wall energies have been shown to form miniaturized microdomain structures. A theory of an adaptive ferroelectric phase has been developed to predict the microdomain-averaged crystal lattice parameters of this structurally inhomogeneous state. The theory is an extension of conventional martensite theory, applied to ferroelectric systems with very low domain wall energies. The case of ferroelectric microdomains of tetragonal symmetry is considered. It is shown for such a case that a nanoscale coherent mixture of microdomains can be interpreted as an adaptive ferroelectric phase, whose microdomain-averaged crystal lattice is monoclinic. The crystal lattice parameters of this monoclinic phase are self-adjusting parameters, which minimize the transformation stress. Self-adjustment is achieved by application of the invariant plane strain to the parent cubic lattice, and the value of the self-adjusted parameters is a linear superposition of the lattice constants of the parent and product phases. Experimental investigations of Pb(Mg1/3Nb2/3)O-3-PbTiO3 and Pb(Zn1/3Nb2/3)O-3-PbTiO3 single crystals confirm many of the predictions of this theory. (C) 2003 American Institute of Physics.en
dc.description.sponsorshipNational Science Foundation (U.S.) - Grant No. DMR-0242619en
dc.description.sponsorshipUnited States. Office of Naval Research - Grant Nos. N000140210340, N000140210126en
dc.description.sponsorshipUnited States. Office of Naval Research. Multidisciplinary University Research Initiatives (MURI) - MURI N0000140110761en
dc.format.extent13 pagesen
dc.identifier.citationJin, Y. M., Wang, Y. U., Khachaturyan, A. G., Li, J. F., Viehland, D. (2003). Adaptive ferroelectric states in systems with low domain wall energy: Tetragonal microdomains. Journal of Applied Physics, 94(5), 3629-3640. doi: 10.1063/1.1599632en
dc.publisherAmerican Institute of Physicsen
dc.rightsIn Copyrighten
dc.subjectLattice theoryen
dc.subjectCrystal latticesen
dc.subjectDomain wallsen
dc.subjectCrystal structuresen
dc.titleAdaptive ferroelectric states in systems with low domain wall energy: Tetragonal microdomainsen
dc.title.serialJournal of Applied Physicsen
dc.typeArticle - Refereeden


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