Direct observation of the formation of polar nanoregions in Pb(Mg 1/3Nb2/3)O3 using neutron pair distribution function analysis

I. K. Jeong; T. W. Darling; J. K. Lee; Th Proffen; R. H. Heffner; J. S. Park; K. S. Hong; W. Dmowski; T. Egami

doi:10.1103/PhysRevLett.94.147602

Direct observation of the formation of polar nanoregions in Pb(Mg _1/3Nb_2/3)O₃ using neutron pair distribution function analysis

I. K. Jeong, T. W. Darling, J. K. Lee, Th Proffen, R. H. Heffner, J. S. Park, K. S. Hong, W. Dmowski, T. Egami

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Abstract

Using neutron pair distribution function analysis over the temperature range from 1000 to 15 K, we demonstrate the existence of local polarization and the formation of medium-range, polar nanoregions (PNRs) with local rhombohedral order in a prototypical relaxor ferroelectric Pb(Mg_1/3Nb _2/3)O₃. We estimate the volume fraction of the PNRs as a function of temperature and show that this fraction steadily increases from 0% to a maximum of ∼30% as the temperature decreases from 650 to 15 K. Below T ∼ 200 K the volume fraction of the PNRs becomes significant, and PNRs freeze into the spin-glass-like state.

Original language	English
Article number	147602
Journal	Physical Review Letters
Volume	94
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.94.147602
State	Published - Apr 15 2005
Externally published	Yes

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title = "Direct observation of the formation of polar nanoregions in Pb(Mg 1/3Nb2/3)O3 using neutron pair distribution function analysis",

abstract = "Using neutron pair distribution function analysis over the temperature range from 1000 to 15 K, we demonstrate the existence of local polarization and the formation of medium-range, polar nanoregions (PNRs) with local rhombohedral order in a prototypical relaxor ferroelectric Pb(Mg1/3Nb 2/3)O3. We estimate the volume fraction of the PNRs as a function of temperature and show that this fraction steadily increases from 0% to a maximum of ∼30% as the temperature decreases from 650 to 15 K. Below T ∼ 200 K the volume fraction of the PNRs becomes significant, and PNRs freeze into the spin-glass-like state.",

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T1 - Direct observation of the formation of polar nanoregions in Pb(Mg 1/3Nb2/3)O3 using neutron pair distribution function analysis

AU - Jeong, I. K.

AU - Darling, T. W.

AU - Lee, J. K.

AU - Proffen, Th

AU - Heffner, R. H.

AU - Park, J. S.

AU - Hong, K. S.

AU - Dmowski, W.

AU - Egami, T.

PY - 2005/4/15

Y1 - 2005/4/15

N2 - Using neutron pair distribution function analysis over the temperature range from 1000 to 15 K, we demonstrate the existence of local polarization and the formation of medium-range, polar nanoregions (PNRs) with local rhombohedral order in a prototypical relaxor ferroelectric Pb(Mg1/3Nb 2/3)O3. We estimate the volume fraction of the PNRs as a function of temperature and show that this fraction steadily increases from 0% to a maximum of ∼30% as the temperature decreases from 650 to 15 K. Below T ∼ 200 K the volume fraction of the PNRs becomes significant, and PNRs freeze into the spin-glass-like state.

AB - Using neutron pair distribution function analysis over the temperature range from 1000 to 15 K, we demonstrate the existence of local polarization and the formation of medium-range, polar nanoregions (PNRs) with local rhombohedral order in a prototypical relaxor ferroelectric Pb(Mg1/3Nb 2/3)O3. We estimate the volume fraction of the PNRs as a function of temperature and show that this fraction steadily increases from 0% to a maximum of ∼30% as the temperature decreases from 650 to 15 K. Below T ∼ 200 K the volume fraction of the PNRs becomes significant, and PNRs freeze into the spin-glass-like state.

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Direct observation of the formation of polar nanoregions in Pb(Mg _1/3Nb_2/3)O₃ using neutron pair distribution function analysis

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