Metal-Insulator Transition and Superconductivity in Spinel-Type System Cu_<1-x>Zn_xIr_2S_4

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概要

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• Tlte thiospit'ae[ conanjootrnd Ctr[r3 s.. exlui bits Clue n?et;xJ-itastt1?tt,or' (lN4-I) trarasitiora accozttpaniedtoy the str'trcttrral tr;nrxsitiora. Ira finis xvork, conajcounds of' CLII .Zn.IrnS,t itt the cotaapositiortrarrge 0< III< 0.5 xvere S} ' nthesized to ex?tuaaine the ef['ects of excess electrotas supplied byreplacing Cu xvitla Zll. Tlae sataaples xx'ere itux'estigated Icy uaaettsttrennents of' X-raty difl'raction,electrical resistatace and taaagttetic strsceptibility. Tlte IN/I-I trstnsitiora teuaaper';tttrre V'NIT decreaseswitla iuacreatsing x. RestzJts stre disctrssed art the lrasis of' tlae taaodeJ of' claar'ge or'dering for tlaeinsttlating statte. It was fotrtad that tlae sanajoles xvitla I >0.3 8110XV no IVI-I tr?rnsition stnd exhibitstrjcercondtrctivity. The tr;rrasition tetaaperattrre Tc is 2.8K f'or x = 0.3 atnd 2.2K f'or x : 0.5.Tlae grotrrad st?tte of tlae systeraa cl'xarages frona itastrlatting to stnpercot?dtrctirag xvitl? irncre?tsirrg Zncorttent.

• 1999-08-15

著者

• SUZUKI Hiroyuki

  National Institute for Materials Science

• SUZUKI Hitoshi

  Tohoku Gakuin University

• 鈴木 秀男

  慶應義塾大学

• 鈴木 秀男

  University Of Tsukuba

• Matsumoto T

  Kyoto Univ. Kyoto

• Sakurai H

  Nanomaterials Laboratory National Institute For Materials Science

• Kitazawa Hideaki

  National Institute For Materials Science

• Kitazawa Hideaki

  The Institute Of Physical And Chemical Research Riken

• Kitazawa Hideaki

  Nanomaterials Laboratory National Institute For Materials Science

• HIRATA Kazuto

  National Institute for Materials Science

• Suzuki H

  National Inst. Materials Sci. Ibaraki

• Suzuki H

  National Research Institute For Metals

• MATSUMOTO Takehiko

  National Research Institute for Metals

• CAO Guanghan

  National Research Institute for Metals

• Kitazawa Hideaki

  National Institute For Material Science

• Kitazawa Hideaki

  Physical Properties Division National Research Institute For Metals

• FURUBAYASHI Takao

  National Institute for Materials Science

• KAMIMURA Akira

  National Research Institute for Metals

• Hirata Kazuto

  National Institute For Material Science

• Kitazawa Hideaki

  The Institute Of Physical And Chemical Research

• Suzuki H

  Waseda Univ. Tokyo

• Matsumoto T

  National Research Institute For Metals

• Matsumoto T

  Materials Engineering Laboratory National Institute Of Materials Science

• Matsumoto T

  Institute For Solid State Physics The University Of Tokyo

• Matsumoto Takehiko

  National Institute For Materials Science

• Kitazawa H

  National Institute For Materials Science (nims)

• Kamimura Akira

  The Department Of Internal Medicine Koseiren Sanjo General Hospital

• Suzuki Hiroyuki

  National Institute For Material Science

• Furubayashi T

  Nanomaterials Laboratory National Institute For Materials Science

• Furubayashi Takao

  National Research Institute For Metals

• Matsumoto Takehiko

  Institute For Solid State Physics The University Of Tokyo

• Suzuki H

  Tohoku Gakuin University

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