MICROSCOPIC MECHANISM OF FERROELECTRIC PROPERTIES IN RELAXOR

• Project/Area Number: 09440123
• Research Category: Grant-in-Aid for Scientific Research (B).
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: 固体物性Ⅰ(光物性・半導体・誘電体)
• Research Institution: KWANSEI GAKUIN UNIVERSITY
• Principal Investigator: TERAUCHI Hikaru SCHOOL OF SCIENCE, DEPERTMENT OF PHYSICS, KWANSEI GAKUIN UNIVERSITY PROFESSOR, 理学部, 教授 (00079667)
• Co-Investigator(Kenkyū-buntansha): TAHAKASHI Isao SCHOOL OF SCIENCE, DEPARATMENT OF PHYSICS, KWANSEI GAKUIN UNIVERSITY ASSISTANT PROFESSOR, 理学部, 助教授 (10212010)
• Project Period (FY): 1997 – 2000
• Project Status: Completed (Fiscal Year 2000)
• Budget Amount: ¥14,000,000 (Direct Cost: ¥14,000,000); Fiscal Year 2000: ¥1,600,000 (Direct Cost: ¥1,600,000); Fiscal Year 1999: ¥1,600,000 (Direct Cost: ¥1,600,000); Fiscal Year 1998: ¥3,700,000 (Direct Cost: ¥3,700,000); Fiscal Year 1997: ¥7,100,000 (Direct Cost: ¥7,100,000)
• Keywords: FERROELECTRIC MATERIALS / RELAXOR / STRUCTURAL PHASE TRANSITION / X-RAY DIFFRACTION / DIELECTRIC CONSTANT / 誘電体 / 散漫相転移 / 薄膜 / クラスター / Pb(IN Nb)O_3 / X線 / ガラス / マイクロクラスター / 相転移 / 圧力効果 / relaxor / PIN / X-ray diffraction / dielectric permittivity / diffuse phase transition / glass phase transition / XAFS local structure

Research Abstract

X-ray diffraction studies were carried out in lead indium niobate. Pb(In_<1/2>Nb_<1/2>)O_3 (PIN) in order to investigate phase transitions of relaxor materials. The phase transitions in PIN crystals depended on the In/Nb arrangements on the B-sites (chemical ordering, S) in perovskite structure. The ordered PIN (S=0.8), the partially ordered PIN (S=0.4) and the disordered PIN (S=0.2) showed the antiferroelectric phase transition, the ferroelectric phase transition and the glass-like phase transition, respectively. The phase transitions under pressure were also measured in the partially ordered PIN and the disordered PIN.With increasing applied pressure, the partially ordered PIN showed the transition to the ferroelectric phase. The pressure-induced phase transitions were explained by the random-field Potts model.

Research Products

• [Publications] S.Ishino et al.: "X-ray Diffraction Study of Domain Reversal in Relaxor Pb(Zn_<1/3>Nb_<2/3>)O_3"J.Phys.Soc.Jpn.. 40(to be published). (2000)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] V.A.Shuvaeva et al.: "The local structure of Pb(In_<1/2>Nb_<1/2>)O_3"J.Synchrotron Rad.. 7(to be published). (2000)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] 八木健一郎: "強誘電体リラクサーの構造と物性"固体物理. 35. 633-640 (2000)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] K.Nomura et al.: "Pressure-Induced Structural Phase Transition form Relaxor Phase to Antiferroelectric Phase in Disordered Pb(In_<1/2>Nb_<1/2>)O_3"J.Phys.Soc.Jpn.. 68. 866-870 (1999)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] K.Nomura et al.: "X-ray Diffraction Study of Pressure-Indeuced Ferroelectric Phase Transition in Relaxor-Pb(In_<1/2>Nb_<1/2>)O_3"J.Phys.Soc.Jpn.. 68. 39-42 (1999)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] N.Yasuda et al.: "The Temperature and Pressure Dependence of the Dielectric Properties of Disordered and Ordered Pb(In_<1/2>Nb_<1/2>)O_3 Single Crystals"J.Phys.Soc.Jpn.. 67. 3952-3957 (1998)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] 大嶋建一,寺内暉: "結晶解析ハンドブック「3.1散漫散乱法」"共立出版. (1999)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] S.Ishino, T.Shingai, K.Yagi, V.A.Shuvaeva, I.Takahashi, H.Terauchi, N.Yasuda and H.Ohwa: "X-ray Diffraction Study of domain Reversal in Relaxor Pb (Zn_<1/3>Nb_<2/3>)O_3."J.Phys.Soc.Jpn.. 40 (to be published). (2000)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] V.A.Shuvaeva, U.Azuma, I.P.Raevski, K.Yagi, K.Sakaue and H.Terauchi: "The Local Structure of Pb (In_<1/2>Nb_<1/2>) O_3."J.Synchrotron Rad. 7 (to be published). (2000)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] K.Nomura, T.Shingai, N.Yasuda, H.Ohwa and H.Terauchi: "Pressure-Induced Structual Phase Transition from Relaxor Phase to Antiferroelectric Phase in Disordered Pb (In_<1/2>Nb_<1/2>) O_3."J.Phys.Soc.Jpn.. 68. 866-870 (1999)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] K.Nomura, T.Shingai, S.Ishino, H.Terauchi, N.Yasuda and H.Ohwa: "X-ray Diffraction Study of Pressure-Induced Ferroelectric Phase Transition in Relaxor-Pb (In_<1/2>Nb_<1/2>) O_3."J.Phys.Soc.Jpn.. 68. 39-42 (1999)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] N.Yasuda, H.Ohwa, J.Oohashi, K.Nomura, H.Terauchi, M.Iwata and Y.Ishibashi: "The Temperature and Pressure Dependence of the Dielectric Properties of Disordered and Ordered Pb (In_<1/2>Nb_<1/2>) O_3 Single Crystals."J.Phys.Soc.Jpn.. 67. 3952-3957 (1998)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] K.Yagi: "Structure and physical properties of ferroelectric relaxor. (in Japanese)"Kotaibutsuri. 35. 633-640 (2000)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] S.Ishino et al.: "X-ray Diffraction Study of Domain Reversal in Relaxor Pb(Zn_<1/3>Nb_<2/3>)O_3"J.Phys.Soc.Jpn.. 69. 3154-3157 (2000)
• [Publications] V.A.Shuvaeva et al.: "The local structure of Pb(In_<1/2>Nb_<1/2>)O_3"J.Synchrotron Rad.. 7(To be published). (2000)
• [Publications] V.A.Shuvaeva et al: "Ti-Offsenter displacements in Ba_<1-x>Sr_xTiO_3 studied by EXAFS"Phys.Rev.B. 62. 633-644 (2000)
• [Publications] Y.Yoneda et al.: "The phase transition of BaTiO_3 thin film on Pt/MgO substrate"J.Phys. : Condens. Matter . 12. 8523-8529 (2000)
• [Publications] 八木健一郎: "強誘電体リラクサーの構造と物性"固体物理. 35. 633-640 (2000)
• [Publications] K, Nomura, ……H. Terauchi……: "X-Ray Diffraction Study of Pressure Induced Ferrvelictnics"J. Phys. Soc. Jpn.. 68. 39-42 (1999)
• [Publications] M. Iwata, …, H. Terauchi: "Disordered System in KBr(NO_2)_2"J. Phys. Soc. Jpn.. 68. 279-283 (1999)
• [Publications] K, Nomura, ……H. Terauchi……: "Pressure Induced phase trazition in Pb(In Nb)O_3"J. Physi. Soc. Japan.. 68. 866-870 (1999)
• [Publications] K. Yagi. H. Terauchi: "EXAFS Study of Oriental Blast"Jpn. J. Appl. Phys.. 38. 152-155 (1999)
• [Publications] K. Sakaue… H. Terauchi: "X-Ray Diffraction Study of BaTiO_3 Film"Jpn. J. Appl. Phys.. 38. 195-197 (1999)
• [Publications] V. A Shuraera H. Terauchi: "Phase Transition in KNbO_3"J. Synchrotion Rad.. 6. 367-369 (1999)
• [Publications] 大嶋健一,寺内暉: "結晶解析ハンドブック"共立出版. 673 (1999)
• [Publications] N.Yasuda,H.Terauchi: "Anti ferroelectricity in Pb(InNb)O_3." J.Kor.Phys.Soc.32. 996-999 (1998)
• [Publications] K.Nomura,H.Terauchi: "Phase fronsition in ordered and disovdered Pb(InNb)O_3" J.Kor.Phys.Soc.32. 989-992 (1998)
• [Publications] V.A.Shuvaeva,H.Terauchi: "Local Structure in KNbO_3" Solid State Commun,. 106. 335-339 (1998)
• [Publications] Y.Yoneda,H.Terauchi: "Structure in BaTiO_3 Films" J.Appl.Phys,. 83. 2458-2461 (1998)
• [Publications] S.Tunekawa,H.Terauchi: "Ferroelectric Domrains in BaTiO_3 Films" J.Apol.phys.84. 999-1002 (1998)
• [Publications] N.Yasuda,H.Terauchi: "The temperatme and Pressure Dependence of" J.Phys.Soc.Jpan. 67. 3952-3957 (1998)
• [Publications] 寺内 暉: "日本応用磁気" MBE人工結晶・超格子はどこまで進んだか, 1,000 (1998)
• [Publications] K.Nomura et al.: "X-Ray Study of Transitions in PbIn_<1/2>Nb_<1/2>O_3" J.Phys.Soc.Jpn.66. 1856-1859 (1997)
• [Publications] N.Yasuda et al.: "Pressure-Induced Dielectric Change from Relaxor to Antiferroelectric Behavior in Disordered Pb(In_<1/2>Nb_<1/2>)O_3" J.Phys.Soc.Jpn.66. 1920-1923 (1997)
• [Publications] K.Yagi et al.: "X-Ray Diffraction Study of KBr_<1-x>(NO_2)_x Mixed Crystal" J.Phys.Soc.Jpn.66. 291-293 (1997)
• [Publications] T.Nagata et al.: "Measurement of Nonlinear Dielectric Constant in Rb_<1-x>(NH_4)_xH_2PO_4 Mixed Crystals" J.Phys.Soc.Jpn.66. 1503-1507 (1997)
• [Publications] V.Shuvaeva et al.: "Polarized XAFS Study of KNbO_3 Local Structure" J.Phys.Soc.Jpn.66. 1351-1355 (1997)
• [Publications] K.Yagi et al.: "EXAFS Study on the Glassy State of K_<1-x>(NH_4)_xI Mixed Crystals" J.Phys.IV France. 7. 1163-1164 (1997)