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1999 Fiscal Year Final Research Report Summary

PROSPECTIVE CREATION ON ENERGY-RELATED FUNCTION MATERIALS USING ISOTOPE EFFECT

Research Project

Project/Area Number 10308023
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Nuclear engineering
Research InstitutionNAGOYA UNIVERSITY

Principal Investigator

MATSUI Tsuneo  NAGOYA UNIV., QUANTUM ENG., PROF., 工学研究科, 教授 (90135319)

Co-Investigator(Kenkyū-buntansha) SHIGEMATSU Hirotake  NAGOYA UNIV., QUANTUM ENG., RESEARCH ASSOSIATE, 工学研究科, 助手 (40281068)
ARITA Yuji  NAGOYA UNIV., QUANTUM ENG., RESEARCH ASSOSIATE, 工学研究科, 助手 (50262879)
NAGASAKI Takanori  NAGOYA UNIV., QUANTUM ENG., ASSOCIATE PROF., 工学研究科, 助教授 (40273289)
Project Period (FY) 1998 – 1999
KeywordsISOTOPE EFFECT / SUPER IONIC CONDUCTOR / FERROELECTRIC MATERIALS / THERMOELECTRIC MATERIAL / QUANTUM EFFECT
Research Abstract

THE ISOTOPE EFFECTS ON THE PHYSICAL PROPERTIES RELATED TO THE ATOMIC VIBRATION, SUCH AS IONIC CONDUCTIVITY OF SUPERIONIC CONDUCTORS, THERMAL CONDUCTIVITIES OF THERMOELECTRIC MATERIALS AND PHASE TRANSITION OF FERROELECTRIC MATERIALS WERE INVESTIGATED.
THE LITHIUM IONIC CONDUCTIVITY OF (LaィイD21/2ィエD2 LiィイD21/2ィエD2)ィイD21-XィエD2SrィイD2XィエD2TiOィイD23ィエD2 (X=0, 0.05), WHICH HAS BEEN KNOWN AS THE CONDUCTOR HAVING THE MOST HIGHEST Li IONIC CONDUCTIVITY, WAS MEASURED USING THE ィイD16ィエD1Li-ENRICHED AND ィイD17ィエD1Li-ENRICHED SAMPLES. THE Li IONIC CONDUCTIVITY OF ィイD16ィエD1Li-ENRICHED SAMPLE WAS ABOUT 1.5 TIMES HIGHER THAN THAT OF ィイD17ィエD1Li-ENRICHED ONE, WHOSE HIGHER VALUE CAN NOT BE EXPLAINED BY THE CLASSICAL DIFFUSION MODEL. THE GLASS TRANSITION TEMPERATURE AND IONIC CONDUCTIVITY OF 0.33LiィイD22ィエD2O-0.67BィイD22ィエD2OィイD23ィエD2 GLASS WERE MEASURED BY VARYING ィイD16ィエD1Li / ィイD17ィエD1Li AND ィイD110ィエD1B / ィイD111ィエD1B ISOTOPE RATIOS IN THE SAMPLES. THE CHANGE IN THE GLASS TRANSITION WAS NOT CLEARLY OBSERVED. HOWEVER THE Li IONIC CONDUCTIVITY OF ィイD16ィエD1 Li-ENRICHED SAMPLE WAS ABOUT 2.2 TIMES HIGHER THAN THAT OF ィイD17ィエD1Li-ENRICHED ONE AT 500K, AND THAT OF ィイD110ィエD1B-ENRICHED SAMPLE WAS ABOUT 1.4 TIMES HIGHER THAN THAT OF ィイD111ィエD1B-ENRICHED SAMPLE AT 500K, SUGGESTING THE PRESENCE OF STRONG CORRELATION BETWEEN Li-IONS AND ALSO THE RELAXATION VIBRATION OF THE B-O NETWORK STRUCTURE.
THE ISOTOPE EFFECT ON FERROELECTRIC PHASE TRANSITION OF PbTiOィイD23ィエD2 WAS MEASURED. THE TRANSITION TEMPERATURE OF ィイD146ィエD1Ti-ENRICHED SAMPLE WAS ABOUT 8.8K HIGHER THAN THAT OF ィイD149ィエD1Ti-ENRICHED SAMPLE.

  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] H. Shigematsu et al.: "Ti-isotope Effect on Ferroelectric Phase Transition of PbTiO_3"Ferroelectrics. 217. 189-194 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y. Arita et al.: "Isotope Effects on Thermal Diffusivity of Boron Carbide"Thermochimica Acta. (in print). (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Shigematsu et al.: "Ti-isotope Effect on Ferroelectric Phase Transition of PbTiO_3 Studied by Heat Capacity Measurement"Thermochimica Acta. (in print). (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. SHIGEMATSU, ET AL.: "Ti-ISOTOPE EFFECT ON FERROELECTRIC PHASE TRANSITION OF PbTiOィイD23ィエD2"FERROELECTRICS. 217. 189-194 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. ARITA, ET AL.: "ISOTOPE EFFECTS OF THERMAL DIFFUSIVITY OF BORON CARBIDE"THERMOCHIMICA ACTA. IN PRINT. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. SHIGEMATSU, ET AL.: "Ti-ISOTOPE EFFECT ON FERROELECTRIC PHASE TRANSITION OF PbTiOィイD23ィエD2 STUDIED BY HEAT CAPACITY MEASUREMENT"THERMOCHIMICA ACTA. IN PRINT. (1999)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2001-10-23  

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