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pro vyhledávání: '"Burns temperature"'
It has been considered that polar nanoregions in relaxors form at Burns temperature Td approx 600 K. High-temperature dielectric investigations of Pb(Mg1/3Nb2/3)O3 (PMN) and 0.7PMN-0.3PbTiO3 reveal, however, that the dielectric dispersion around 600
Externí odkaz:
http://arxiv.org/abs/1002.2128
Autor:
Gehring, P. M., Hiraka, H., Stock, C., Lee, S. -H., Chen, W., Ye, Z. -G., Vakhrushev, S. B., Chowdhuri, Z.
Publikováno v:
Phys. Rev. B 79, 224109 (2009)
We have used neutron scattering techniques to characterize the diffuse scattering and lattice dynamics in single crystals of the relaxor PMN from 10K to 900K. We observed two distinct types of diffuse scattering. The first is weak, relatively tempera
Externí odkaz:
http://arxiv.org/abs/0904.4234
Autor:
Prosandeev, S. A., Vakhrushev, S. B., Okuneva, N. M., Markovin, P. A., Raevski, I. P., Zaharchenko, I. N., Prosandeeva, M. S.
We suggest considering the Burns temperature in lead containing relaxor ferroelectrics as the temperature, at which Pb becomes off-center and nearly randomly occupies positions around the center on a sphere with the radius, which increases with the t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0506132
Autor:
Vakhrushev, S., Shapiro, S.
Inelastic neutron scattering measurements of the relaxor ferroelectric PbMg$_{1 / 3}$Nb$_{2 / 3}$O$_{3}$ (PMN) in the temperature range 490~K$<$T$<$880~K directly observe the soft mode (SM) associated with the Curie-Weiss behavior of the dielectric c
Externí odkaz:
http://arxiv.org/abs/cond-mat/0203103
Autor:
Banerjee, Krishnarjun1 (AUTHOR), Asthana, Saket1 (AUTHOR) asthanas@iith.ac.in
Publikováno v:
Journal of Applied Physics. 4/14/2020, Vol. 127 Issue 14, p1-13. 13p. 1 Diagram, 1 Chart, 13 Graphs.
Publikováno v:
Phys. Rev. Lett. 87, 277601 (2001)
We report neutron inelastic scattering measurements of the lowest-energy transverse optic (TO) phonon branch in the relaxor Pb(Mg_1/3Nb_2/3)O_3 from 400 to 1100 K. Far above the Burns temperature T_d ~ 620 K we observe well-defined propagating TO mod
Externí odkaz:
http://arxiv.org/abs/cond-mat/0108170
Akademický článek
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Akademický článek
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Autor:
Krishnarjun Banerjee, Saket Asthana
Publikováno v:
Journal of Applied Physics. 127:144102
The effect of cation radius mismatch on the relaxor to paraelectric state transition temperature of the lead free ferroelectric Na0.5 − xRbxBi0.5TiO3 was examined, and the observed trend was different from manganite perovskites. The transition temp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::546ebd6762bb20edf120d8e2533c69d5
https://doi.org/10.1063/1.5131201
https://doi.org/10.1063/1.5131201
Autor:
Evgeniy Dul'kin
Publikováno v:
Ferroelectrics. 467:1-5
Some present theoretical conceptions and experimental data concerning the existence and location of Burns temperature in relaxor ferroelectrics are discussed. It is shown that dielectric data is unable to locate Burns temperature, whereas both the th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55d4643aa9d7a3710e80b93537c1486f
https://doi.org/10.1080/00150193.2014.932139
https://doi.org/10.1080/00150193.2014.932139