Phase transitions in Na0.5Bi0.5TiO3-(Sr0.7Bi0.2)TiO3-PbTiO3 solid solutions

M. Dunce; E. Birks; J. Peräntie; J. Hagberg; M. Antonova; R. Ignatans; A. Sternberg

doi:10.1080/00150193.2016.1168213

Phase transitions in Na_0.5Bi_0.5TiO₃-(Sr_0.7Bi_0.2)TiO₃-PbTiO₃ solid solutions

M. Dunce^*
, E. Birks
, J. Peräntie
, J. Hagberg
, M. Antonova
, R. Ignatans
, A. Sternberg

^*Šī darba korespondējošais autors

Optisko materiālu laboratorija, Cietvielu fizikas institūts

University of Oulu
University of Latvia

Zinātniskās darbības rezultāts: Devums žurnālam › Zinātniskais raksts (žurnālā) › koleģiāli recenzēts

2 Atsauces (Scopus)

Kopsavilkums

Increasing of Sr_0.7Bi_0.2TiO₃ concentration in Na_0.5Bi_0.5TiO₃-Sr_0.7Bi_0.2TiO₃ solid solutions causes increasing of Bi/Na relation and vacancies in the A-site of perovskite structure. In temperature dependence of dielectric permittivity, such a change of composition is reflected by transforming of the frequency-dependent shoulder into a maximum characteristic for relaxor ferroelectrics and diminishing of the frequency-independent maximum characteristic for Na_0.5Bi_0.5TiO₃. Here changes in behavior of dielectric permittivity and polarization are studied if PbTiO₃ is added in a certain concentration range of Na_0.5Bi_0.5TiO₃-Sr_0.7Bi_0.2TiO₃ solid solutions. Changes of the characteristic temperatures as a function of PbTiO₃ concentration are determined. Behavior of the electrocaloric effect is compared with the results obtained for Na_0.5Bi_0.5TiO₃-SrTiO₃-PbTiO₃.

Oriģinālvaloda	Angļu
Lapas (no-līdz)	94-101
Lapu skaits	8
Žurnāls	Ferroelectrics
Sējums	498
Izdevuma numurs	1
DOIs	https://doi.org/10.1080/00150193.2016.1168213
Publikācijas statuss	Publicēts - 31 aug. 2016

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title = "Phase transitions in Na0.5Bi0.5TiO3-(Sr0.7Bi0.2)TiO3-PbTiO3 solid solutions",

abstract = "Increasing of Sr0.7Bi0.2TiO3 concentration in Na0.5Bi0.5TiO3-Sr0.7Bi0.2TiO3 solid solutions causes increasing of Bi/Na relation and vacancies in the A-site of perovskite structure. In temperature dependence of dielectric permittivity, such a change of composition is reflected by transforming of the frequency-dependent shoulder into a maximum characteristic for relaxor ferroelectrics and diminishing of the frequency-independent maximum characteristic for Na0.5Bi0.5TiO3. Here changes in behavior of dielectric permittivity and polarization are studied if PbTiO3 is added in a certain concentration range of Na0.5Bi0.5TiO3-Sr0.7Bi0.2TiO3 solid solutions. Changes of the characteristic temperatures as a function of PbTiO3 concentration are determined. Behavior of the electrocaloric effect is compared with the results obtained for Na0.5Bi0.5TiO3-SrTiO3-PbTiO3.",

keywords = "electrocaloric effect, NBT, phase transitions, solid solutions",

author = "M. Dunce and E. Birks and J. Per{\"a}ntie and J. Hagberg and M. Antonova and R. Ignatans and A. Sternberg",

note = "Publisher Copyright: {\textcopyright} 2016, {\textcopyright} Taylor \& Francis Group, LLC.",

year = "2016",

month = aug,

day = "31",

doi = "10.1080/00150193.2016.1168213",

language = "English",

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TY - JOUR

T1 - Phase transitions in Na0.5Bi0.5TiO3-(Sr0.7Bi0.2)TiO3-PbTiO3 solid solutions

AU - Dunce, M.

AU - Birks, E.

AU - Peräntie, J.

AU - Hagberg, J.

AU - Antonova, M.

AU - Ignatans, R.

AU - Sternberg, A.

PY - 2016/8/31

Y1 - 2016/8/31

N2 - Increasing of Sr0.7Bi0.2TiO3 concentration in Na0.5Bi0.5TiO3-Sr0.7Bi0.2TiO3 solid solutions causes increasing of Bi/Na relation and vacancies in the A-site of perovskite structure. In temperature dependence of dielectric permittivity, such a change of composition is reflected by transforming of the frequency-dependent shoulder into a maximum characteristic for relaxor ferroelectrics and diminishing of the frequency-independent maximum characteristic for Na0.5Bi0.5TiO3. Here changes in behavior of dielectric permittivity and polarization are studied if PbTiO3 is added in a certain concentration range of Na0.5Bi0.5TiO3-Sr0.7Bi0.2TiO3 solid solutions. Changes of the characteristic temperatures as a function of PbTiO3 concentration are determined. Behavior of the electrocaloric effect is compared with the results obtained for Na0.5Bi0.5TiO3-SrTiO3-PbTiO3.

AB - Increasing of Sr0.7Bi0.2TiO3 concentration in Na0.5Bi0.5TiO3-Sr0.7Bi0.2TiO3 solid solutions causes increasing of Bi/Na relation and vacancies in the A-site of perovskite structure. In temperature dependence of dielectric permittivity, such a change of composition is reflected by transforming of the frequency-dependent shoulder into a maximum characteristic for relaxor ferroelectrics and diminishing of the frequency-independent maximum characteristic for Na0.5Bi0.5TiO3. Here changes in behavior of dielectric permittivity and polarization are studied if PbTiO3 is added in a certain concentration range of Na0.5Bi0.5TiO3-Sr0.7Bi0.2TiO3 solid solutions. Changes of the characteristic temperatures as a function of PbTiO3 concentration are determined. Behavior of the electrocaloric effect is compared with the results obtained for Na0.5Bi0.5TiO3-SrTiO3-PbTiO3.

KW - electrocaloric effect

KW - NBT

KW - phase transitions

KW - solid solutions

UR - https://www.scopus.com/pages/publications/84975134142

U2 - 10.1080/00150193.2016.1168213

DO - 10.1080/00150193.2016.1168213

M3 - Article

AN - SCOPUS:84975134142

SN - 0015-0193

VL - 498

SP - 94

EP - 101

JO - Ferroelectrics

JF - Ferroelectrics

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