Phase Transformations and Properties of Thin Barium Neodymium Ferroniobate Films in the Temperature Range from –190 to 200°C

— Single-phase, impurity-free barium neodymium ferroniobate (Ba 2 NdFeNb 4 O 15 ) films ~660 nm in thickness have been grown on a Pt(001)/MgO(001) substrate using rf cathode sputtering in an oxygen atmosphere. According to X-ray diffraction data, the films are c -axis-oriented. Two phase transformat...

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Bibliographic Details
Published in:Inorganic materials 2022, Vol.58 (10), p.1051-1057
Main Authors: Pavlenko, A. V., Stryukov, D. V., Zhidel’, K. M., Matyash, Ya. Yu
Format: Article
Language:English
Subjects:
Barium
Cathode sputtering
Chemistry
Chemistry and Materials Science
Ferroelectric materials
Ferroelectricity
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Neodymium
Phase transitions
Room temperature
Substrates
Thickness
Thin films
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Summary:— Single-phase, impurity-free barium neodymium ferroniobate (Ba 2 NdFeNb 4 O 15 ) films ~660 nm in thickness have been grown on a Pt(001)/MgO(001) substrate using rf cathode sputtering in an oxygen atmosphere. According to X-ray diffraction data, the films are c -axis-oriented. Two phase transformations have been identified in the Ba 2 NdFeNb 4 O 15 films in the temperature range from –190 to 200°C: paraelectric → ferroelectric and ferroelectric → ferroelectric. The Ba 2 NdFeNb 4 O 15 films have been shown to have high room-temperature energy efficiency. The mechanisms underlying the observed effects are discussed and potential applications of barium neodymium ferroniobate nanofilms are analyzed.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168522100107