In situ observation of the orthorhombic-tetragonal phase transition in La0.64(Ti0.92)Nb0.08)O3

Mizuki Mori; Masatomo Yashima; Roushown Ali; Atsushi Sakai; Takashi Kamiyama; Kenichi Oikawa; Takenori Hoshikawa; Masahiko Tanaka; Takeharu Mori; Shuki Shuki

doi:10.14853/pcersj.2002F.0.237.0

15th Fall Meeting of The Ceramic Society of Japan

DOI https://doi.org/10.14853/pcersj.2002F.0.237.0

Conference information

Host: The Ceramic Society of Japan

In situ observation of the orthorhombic-tetragonal phase transition in La_0.64(Ti_0.92)Nb_0.08)O₃

Mizuki Mori, Masatomo Yashima, Roushown Ali, Atsushi Sakai, Takashi Kamiyama, Kenichi Oikawa, Takenori Hoshikawa, Masahiko Tanaka, Takeharu Mori, Shuki Shuki

Author information

Keywords: Lanthaum titanate, Neutron powder diffraction, High temperature, Synchrotron X-ray powder diffraction, Phase transition, Dielectrics, lonic conductor

CONFERENCE PROCEEDINGS FREE ACCESS

Pages 237

Details

Abstract

Metal element M doped La_2/3(Ti, M)O₃ has interesting electrical properties. La_0.64Ti_0.92Nb_0.08O₃ exhibits an orthorhombic-tetragonal phase transition at a high temperature, but detailed structural information is not known yet. From the results of high-temperature neutron and synchrotron diffraction measurements, we found the existence of reversible phase transition at 355°C. The structure of high-temperature phase at 467°C was refined by Rietveld analysis (space group P4/mmm).

Corresponding author

Register with J-STAGE for free!