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Synthesis of Oriented Ba 2 NaNb 5 O 15 (BNN) Thin Films from an Alkoxy‐derived Precursor
Author(s) -
Yogo Toshinobu,
Sakamoto Wataru,
Isaji Tadayuki,
Ichida Masao,
Nakamura Arao,
Hirano Shinichi
Publication year - 1999
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1999.tb02140.x
Subject(s) - materials science , coercivity , thin film , tungsten , ferroelectricity , barium , analytical chemistry (journal) , crystallography , nanotechnology , chemistry , optoelectronics , dielectric , metallurgy , physics , condensed matter physics , chromatography
Ba 2 NaNb 5 O 15 (BNN) thin films with a tungsten bronze structure were fabricated using a precursor solution that was synthesized from barium, sodium, and niobium alkoxides. Highly (002)‐oriented BNN films were prepared successfully on Pt(100)/MgO(100) substrates at 700°C, using a BNN underlayer. X‐ray pole‐figure measurement showed that the BNN films that crystallized on Pt(100)/MgO(100) substrates had two in‐plane orientations. The remanent polarization and coercive field of the BNN film (thickness of 1.0 µm) that was crystallized at 700°C were 12.3 µC/cm 2 and 101 kV/cm, respectively, at –150°C (123 K). BNN films on fused silica substrates exhibited second harmonic generation upon irradiation with 1064 nm light.