---
_id: '2135'
abstract:
- lang: eng
text: We use the x-ray absorption fine structure spectroscopy at Nb K edge to reveal
the local atomic structure of KxNa1−xNbO3 (PSN) solid solutions. The study is
performed over the temperature range 10–1023K for six different x values. We show
that only the combined analysis of extended x-ray absorption fine structure and
preedge fine structure provides complete and reliable information about the local
structure of NbO6 octahedra. Such extensive treatment of the experimental data
shows that the local structure of PSN could be described within the spherical
model proposed earlier as a hypothesis for perovskite-type ferroelectric zirconates.
We reveal that the Nb atoms are localized near their average positions on the
sphere surfaces for all temperatures and x values. With regard to previous results
we point out the features of microscopic structure common for PSN and perovskite-type
zirconates.
acknowledgement: This work was partially supported by Russian Foundation for Basic
Research Grant No. 07-02-00796a. The authors are indebted to the French Government
for financial support of E.S.N. and M.P.L. within the CNOUS program.
author:
- first_name: Mikhail
full_name: Mikhail Lemeshko
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Elena
full_name: Nazarenko, Elena S
last_name: Nazarenko
- first_name: A.A
full_name: Gonchar, A.A
last_name: Gonchar
- first_name: Larisa
full_name: Reznichenko, Larisa A
last_name: Reznichenko
- first_name: Tatiana
full_name: Nedoseykina, Tatiana I
last_name: Nedoseykina
- first_name: Alexander
full_name: Novakovich, Alexander A
last_name: Novakovich
- first_name: Olivier
full_name: Mathon, Olivier
last_name: Mathon
- first_name: Yves
full_name: Joly, Yves
last_name: Joly
- first_name: Rostislav
full_name: Vedrinskiǐ, Rostislav V
last_name: Vedrinskiǐ
citation:
ama: Lemeshko M, Nazarenko E, Gonchar A., et al. EXAFS studies of the local atomic
structure of the lead-free piezoelectric ceramics KxNa1−xNbO3 over the temperature
range 10–1023K. Physical Review B - Condensed Matter and Materials Physics.
2007;76. doi:http://dx.doi.org/10.1103/PhysRevB.76.134106
apa: Lemeshko, M., Nazarenko, E., Gonchar, A. ., Reznichenko, L., Nedoseykina, T.,
Novakovich, A., … Vedrinskiǐ, R. (2007). EXAFS studies of the local atomic structure
of the lead-free piezoelectric ceramics KxNa1−xNbO3 over the temperature range
10–1023K. Physical Review B - Condensed Matter and Materials Physics. American
Physical Society. http://dx.doi.org/10.1103/PhysRevB.76.134106
chicago: Lemeshko, Mikhail, Elena Nazarenko, A.A Gonchar, Larisa Reznichenko, Tatiana
Nedoseykina, Alexander Novakovich, Olivier Mathon, Yves Joly, and Rostislav Vedrinskiǐ.
“EXAFS Studies of the Local Atomic Structure of the Lead-Free Piezoelectric Ceramics
KxNa1−xNbO3 over the Temperature Range 10–1023K.” Physical Review B - Condensed
Matter and Materials Physics. American Physical Society, 2007. http://dx.doi.org/10.1103/PhysRevB.76.134106.
ieee: M. Lemeshko et al., “EXAFS studies of the local atomic structure of
the lead-free piezoelectric ceramics KxNa1−xNbO3 over the temperature range 10–1023K,”
Physical Review B - Condensed Matter and Materials Physics, vol. 76. American
Physical Society, 2007.
ista: Lemeshko M, Nazarenko E, Gonchar A., Reznichenko L, Nedoseykina T, Novakovich
A, Mathon O, Joly Y, Vedrinskiǐ R. 2007. EXAFS studies of the local atomic structure
of the lead-free piezoelectric ceramics KxNa1−xNbO3 over the temperature range
10–1023K. Physical Review B - Condensed Matter and Materials Physics. 76.
mla: Lemeshko, Mikhail, et al. “EXAFS Studies of the Local Atomic Structure of the
Lead-Free Piezoelectric Ceramics KxNa1−xNbO3 over the Temperature Range 10–1023K.”
Physical Review B - Condensed Matter and Materials Physics, vol. 76, American
Physical Society, 2007, doi:http://dx.doi.org/10.1103/PhysRevB.76.134106.
short: M. Lemeshko, E. Nazarenko, A.. Gonchar, L. Reznichenko, T. Nedoseykina, A.
Novakovich, O. Mathon, Y. Joly, R. Vedrinskiǐ, Physical Review B - Condensed Matter
and Materials Physics 76 (2007).
date_created: 2018-12-11T11:55:54Z
date_published: 2007-10-09T00:00:00Z
date_updated: 2021-01-12T06:55:31Z
day: '09'
doi: http://dx.doi.org/10.1103/PhysRevB.76.134106
extern: 1
intvolume: ' 76'
month: '10'
publication: Physical Review B - Condensed Matter and Materials Physics
publication_status: published
publisher: American Physical Society
publist_id: '4899'
quality_controlled: 0
status: public
title: EXAFS studies of the local atomic structure of the lead-free piezoelectric
ceramics KxNa1−xNbO3 over the temperature range 10–1023K
type: journal_article
volume: 76
year: '2007'
...