Structural instabilities, incommensurate modulations and P and Q phases in sodium niobate in the temperature range 300-500 K

L. A. Reznichenko; L. A. Shilkina; E. S. Gagarina; I. P. Raevskiǐ; E. A. Dul'kin; E. M. Kuznetsova; V. V. Akhnazarova

doi:10.1134/1.1578130

Structural instabilities, incommensurate modulations and P and Q phases in sodium niobate in the temperature range 300-500 K

L. A. Reznichenko^*, L. A. Shilkina, E. S. Gagarina, I. P. Raevskiǐ, E. A. Dul'kin, E. M. Kuznetsova, V. V. Akhnazarova

^*Corresponding author for this work

Department of Applied Physics

Research output: Contribution to journal › Article › peer-review

60 Scopus citations

Abstract

The relation between the phase transition in the vicinity of 420 K discovered earlier and the formation of an incommensurate phase in the temperature range 410-460 K is established based on the X-ray, dielectric, and dilatometric studies of sodium niobate (NaNbO₃) single crystals and ceramics. It is also established that this phase is characterized by temperature and temporal instabilities. Anomalies in some physical characteristics in the vicinity of 350 K are revealed. It is also shown that the thermodynamic history of the samples is important for the coexistence of the regions of the ferroelectric Q and antiferroelectric P phases in NaNbO₃.

Original language	English
Pages (from-to)	448-456
Number of pages	9
Journal	Crystallography Reports
Volume	48
Issue number	3
DOIs	https://doi.org/10.1134/1.1578130
State	Published - May 2003

Bibliographical note

Funding Information:
ACKNOWLEDGMENTS This study was supported by the Russian Foundation for Basic Research, project no. 99-02-17575.

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title = "Structural instabilities, incommensurate modulations and P and Q phases in sodium niobate in the temperature range 300-500 K",

abstract = "The relation between the phase transition in the vicinity of 420 K discovered earlier and the formation of an incommensurate phase in the temperature range 410-460 K is established based on the X-ray, dielectric, and dilatometric studies of sodium niobate (NaNbO3) single crystals and ceramics. It is also established that this phase is characterized by temperature and temporal instabilities. Anomalies in some physical characteristics in the vicinity of 350 K are revealed. It is also shown that the thermodynamic history of the samples is important for the coexistence of the regions of the ferroelectric Q and antiferroelectric P phases in NaNbO3.",

author = "Reznichenko, {L. A.} and Shilkina, {L. A.} and Gagarina, {E. S.} and Raevskiǐ, {I. P.} and Dul'kin, {E. A.} and Kuznetsova, {E. M.} and Akhnazarova, {V. V.}",

note = "Funding Information: ACKNOWLEDGMENTS This study was supported by the Russian Foundation for Basic Research, project no. 99-02-17575.",

year = "2003",

month = may,

doi = "10.1134/1.1578130",

language = "אנגלית",

volume = "48",

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journal = "Crystallography Reports",

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AU - Reznichenko, L. A.

AU - Shilkina, L. A.

AU - Gagarina, E. S.

AU - Raevskiǐ, I. P.

AU - Dul'kin, E. A.

AU - Kuznetsova, E. M.

AU - Akhnazarova, V. V.

N1 - Funding Information: ACKNOWLEDGMENTS This study was supported by the Russian Foundation for Basic Research, project no. 99-02-17575.

PY - 2003/5

Y1 - 2003/5

N2 - The relation between the phase transition in the vicinity of 420 K discovered earlier and the formation of an incommensurate phase in the temperature range 410-460 K is established based on the X-ray, dielectric, and dilatometric studies of sodium niobate (NaNbO3) single crystals and ceramics. It is also established that this phase is characterized by temperature and temporal instabilities. Anomalies in some physical characteristics in the vicinity of 350 K are revealed. It is also shown that the thermodynamic history of the samples is important for the coexistence of the regions of the ferroelectric Q and antiferroelectric P phases in NaNbO3.

AB - The relation between the phase transition in the vicinity of 420 K discovered earlier and the formation of an incommensurate phase in the temperature range 410-460 K is established based on the X-ray, dielectric, and dilatometric studies of sodium niobate (NaNbO3) single crystals and ceramics. It is also established that this phase is characterized by temperature and temporal instabilities. Anomalies in some physical characteristics in the vicinity of 350 K are revealed. It is also shown that the thermodynamic history of the samples is important for the coexistence of the regions of the ferroelectric Q and antiferroelectric P phases in NaNbO3.

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Structural instabilities, incommensurate modulations and P and Q phases in sodium niobate in the temperature range 300-500 K

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