Broadband dielectric spectroscopy of phonons and polar nanoclusters in PbMg1/3Nb2/3O3-35%PbTiO3 ceramics: Grain size effects
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F09%3A00340598" target="_blank" >RIV/68378271:_____/09:00340598 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Broadband dielectric spectroscopy of phonons and polar nanoclusters in PbMg1/3Nb2/3O3-35%PbTiO3 ceramics: Grain size effects
Original language description
The dielectric response of PMN-35%PT ceramics from 100 Hz up to 100 THz was determined in a broad temperature range 5-900 K. Two ceramics were studied and compared: coarse grain ceramics (CGC - grain size 4 ?m) and fine grain ceramics (FGC ? grain size 150 nm). Both ceramics showed similar polar phonon response and the ferroelectric transition near TC = 440 K was manifested by partial softening of the overdamped lowest-frequency phonon. However, the dielectric response was dominated by a complex relaxational dispersion in the microwave range due to relaxor-like dynamics of the polar nanoclusters, which strongly differed in both the ceramics. Whereas the CGC undergoes a well-defined ferroelectric transition like a single crystal, FGC exhibits a relaxorbehavior with substantially smaller permittivity showing partial clamping of the polar nanocluster dynamics by grain boundaries.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review. B
ISSN
1098-0121
e-ISSN
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Volume of the periodical
79
Issue of the periodical within the volume
10
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
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UT code for WoS article
000264768600038
EID of the result in the Scopus database
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