Crystal structure analysis of hydrothermally synthesized epitaxial (K xNa1-x)NbO3 films

Takahisa Shiraishi; Noriyuki Kaneko; Hiro Einishi; Takao Shimizu; Minoru Kurosawa; Hiroshi Uchida; Takeshi Kobayashi; Takanori Kiguchi; Toyohiko J. Konno; Hiroshi Funakubo

doi:10.7567/JJAP.52.09KA11

Crystal structure analysis of hydrothermally synthesized epitaxial (K _xNa_1-x)NbO₃ films

Takahisa Shiraishi, Noriyuki Kaneko, Hiro Einishi, Takao Shimizu, Minoru Kurosawa, Hiroshi Uchida, Takeshi Kobayashi, Takanori Kiguchi, Toyohiko J. Konno, Hiroshi Funakubo

Materials Processing and Characterization Division

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

17 Citations (Scopus)

Abstract

Epitaxial (K_xNa_1-x)NbO₃ films with various compositions x were deposited on Nb-doped (100)SrTiO₃ single crystal substrates at 240 °C by the hydrothermal method. Detailed crystal structures were analyzed by X-ray diffraction. All the (K_xNa _1-x)NbO₃ films consisted of a perovskite phase without any impurity phase. High-temperature XRD data showed that (K_xNa _1-x)NbO₃ films with x = 0.03 and 0.86 transformed to a single cubic phase at 600 °C through the intermediate phase. On the other hand, (K_xNa_1-x)NbO₃ films with x = 0.24 showed two diffraction peaks at 600 °C originating from individual phases having different unit cell volumes. The result shows that these films consisted of a mixture of two perovskite phases with K- and Na- rich (K_xNa _1-x)NbO₃ composition.

Original language	English
Article number	09KA11
Journal	Japanese journal of applied physics
Volume	52
Issue number	9 PART2
DOIs	https://doi.org/10.7567/JJAP.52.09KA11
Publication status	Published - 2013 Sep

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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Crystal structure analysis of hydrothermally synthesized epitaxial (K _xNa_1-x)NbO₃ films. / Shiraishi, Takahisa; Kaneko, Noriyuki; Einishi, Hiro; Shimizu, Takao; Kurosawa, Minoru; Uchida, Hiroshi; Kobayashi, Takeshi; Kiguchi, Takanori ; Konno, Toyohiko J.; Funakubo, Hiroshi.

In: Japanese journal of applied physics, Vol. 52, No. 9 PART2, 09KA11, 09.2013.

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

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title = "Crystal structure analysis of hydrothermally synthesized epitaxial (K xNa1-x)NbO3 films",

abstract = "Epitaxial (KxNa1-x)NbO3 films with various compositions x were deposited on Nb-doped (100)SrTiO3 single crystal substrates at 240 °C by the hydrothermal method. Detailed crystal structures were analyzed by X-ray diffraction. All the (KxNa 1-x)NbO3 films consisted of a perovskite phase without any impurity phase. High-temperature XRD data showed that (KxNa 1-x)NbO3 films with x = 0.03 and 0.86 transformed to a single cubic phase at 600 °C through the intermediate phase. On the other hand, (KxNa1-x)NbO3 films with x = 0.24 showed two diffraction peaks at 600 °C originating from individual phases having different unit cell volumes. The result shows that these films consisted of a mixture of two perovskite phases with K- and Na- rich (KxNa 1-x)NbO3 composition.",

author = "Takahisa Shiraishi and Noriyuki Kaneko and Hiro Einishi and Takao Shimizu and Minoru Kurosawa and Hiroshi Uchida and Takeshi Kobayashi and Takanori Kiguchi and Konno, {Toyohiko J.} and Hiroshi Funakubo",

year = "2013",

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AU - Shiraishi, Takahisa

AU - Kaneko, Noriyuki

AU - Einishi, Hiro

AU - Shimizu, Takao

AU - Kurosawa, Minoru

AU - Uchida, Hiroshi

AU - Kobayashi, Takeshi

AU - Kiguchi, Takanori

AU - Konno, Toyohiko J.

AU - Funakubo, Hiroshi

PY - 2013/9

Y1 - 2013/9

N2 - Epitaxial (KxNa1-x)NbO3 films with various compositions x were deposited on Nb-doped (100)SrTiO3 single crystal substrates at 240 °C by the hydrothermal method. Detailed crystal structures were analyzed by X-ray diffraction. All the (KxNa 1-x)NbO3 films consisted of a perovskite phase without any impurity phase. High-temperature XRD data showed that (KxNa 1-x)NbO3 films with x = 0.03 and 0.86 transformed to a single cubic phase at 600 °C through the intermediate phase. On the other hand, (KxNa1-x)NbO3 films with x = 0.24 showed two diffraction peaks at 600 °C originating from individual phases having different unit cell volumes. The result shows that these films consisted of a mixture of two perovskite phases with K- and Na- rich (KxNa 1-x)NbO3 composition.

AB - Epitaxial (KxNa1-x)NbO3 films with various compositions x were deposited on Nb-doped (100)SrTiO3 single crystal substrates at 240 °C by the hydrothermal method. Detailed crystal structures were analyzed by X-ray diffraction. All the (KxNa 1-x)NbO3 films consisted of a perovskite phase without any impurity phase. High-temperature XRD data showed that (KxNa 1-x)NbO3 films with x = 0.03 and 0.86 transformed to a single cubic phase at 600 °C through the intermediate phase. On the other hand, (KxNa1-x)NbO3 films with x = 0.24 showed two diffraction peaks at 600 °C originating from individual phases having different unit cell volumes. The result shows that these films consisted of a mixture of two perovskite phases with K- and Na- rich (KxNa 1-x)NbO3 composition.

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