Electrical conductivity of insulating SrTiO3 and LaGaO 3 at phase transitions

Daisuke Matsumoto, Mizuki Yamato, Yousuke Urakami, Yukio Watanabe

研究成果: Contribution to journalConference article査読

3 被引用数 (Scopus)


We have studied the extremely small conductivity of the nominally stoichiometric insulating single crystals LaGaO3and SrTiO3 in the dark. The conductivity of the LaGaO3 and SrTiO3 crystals exhibits activation type temperature dependence. We have found that the conductivity of the LaGaO3 crystal changes at the ferro-elastic-like phase transition. However, unlike the our previous report on the insulating BaTiO3 and relaxor ferroelectric single crystals, the conductivity of both LaGaO3and SrTiO3 crystals do not peak. Therefore, the ferroelectric phase transition or the existence of the spontaneous polarization is essential for the peaking in the conductivity-temperature characteristics to occur.

出版ステータス出版済み - 2007
イベント8th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity, RCBJSF-8 - Tsukuba, 日本
継続期間: 5 15 20065 19 2006

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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