The PNR to relaxor transition in PSN with nearest neighbor Pb-O divacancies.
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| Title: | The PNR to relaxor transition in PSN with nearest neighbor Pb-O divacancies. |
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| Authors: | Burton, B. P.1 benjamin.burton@nist.gov, Cockayne, Eric1, Gopman, D.1, Dogan, G.1, Hood, Sarah1 |
| Source: | Ferroelectrics. 2018, Vol. 535 Issue 1, p55-64. 10p. |
| Subjects: | Phase diagrams, Lead zirconate titanate, Molecular dynamics, Relaxor ferroelectrics |
| Abstract: | In previous work, molecular dynamics simulations based on a firstprinciples- derived effective Hamiltonian for Pb1-X(Sc1/2Nb1/2)O3-X (PSN), with nearest-neighbor Pb-O divacancy pairs, was used to calculate X[Pb-O] vs. T, phase diagrams for PSN with: ideal rock-salt type chemical order; nanoscale chemical short-range order; and random chemical disorder. Here, we show that the phase diagrams should include additional regions in which a glassy relaxor-phase (or state) is predicted. With respect to phase diagram topology, these results strongly support the analogy between relaxors and magnetic spinglass- systems. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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