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Precise low temperature and high pressure apparatus using herium on an experimental basis

Research Project

Project/Area Number 07554056
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 固体物性Ⅱ(磁性・金属・低温)
Research InstitutionThe University of Tokyo

Principal Investigator

MORI Nobuo  Institute for Solid State Physics, The University of Tokyo, Professor, 物性研究所, 教授 (40000848)

Co-Investigator(Kenkyū-buntansha) MURAYAMA Chizuko  Institute for Solid State Physics Research Assistant, 物性研究所, 教務職員 (80174316)
TAKESHITA Nao  Institute for Solid State Physics Research Associate, 物性研究所, 助手 (60292760)
ISHIMOTO Hidehiko  Institute for Solid State Physics Professor, 物性研究所, 教授 (60044773)
高橋 博樹  東京大学, 物性研究所, 助手 (80188044)
Project Period (FY) 1995 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥6,400,000 (Direct Cost: ¥6,400,000)
Fiscal Year 1997: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1996: ¥5,400,000 (Direct Cost: ¥5,400,000)
KeywordsHigh pressure apparatus / Low temperature and high pressure / Low temperature, high pressure and magnetic field / 低温 / 高圧 / ヘリウム / ダイヤモンドアンビル / ピストンシリンダー
Research Abstract

High pressure techniques at low temperatures have been proved to be very powerful tools in studies of recent topics related to the fundamental problems in strong correlated electron systems such as high-Tc superconductors, heavy fermion compounds and organic conductors. One of the main difficulties in high pressure techniques at low temperatures is to obtain uniform pressures at which reliable results are given, In, order to generate hydrostatic pressures at low temperatures we try to make a high pressure apparatus using herium on a experimental basis.
In the first step, in order to measure the superfluid fraction of the A phase of ^3He we made a high pressure equipment combined with a superconducting magnet using ^3He as a pressure transmitting medium. It works at high pressures up to 29 bar and at temperatures down to 34mK.Next, we tried to make an apparatus by which the unidirectional pressure can bbe applied on a fragile single crystal at low temperatures. Using this apparatus we made resistivity measurements of alpha -( BEDT-TTF )_2 KHg(SCN)_4 in the conducting plane under uniaxial stress below 1K.We used the cold bellows in which a pressure is variable by changing _4He gas at room temperature because of no solidification of liquid _4He up to 25 bar. The effective diameter of the bellows is about 70mm and the pressure amplification is about 100-200.
Similar bellows are adapted to high pressure generation up to 3OGPa using a diamond anvils combined with a dilution refrigerator and a superconducting magnet. This system is expected tobe a powerful tool in studies of recent and future topics related to the fundamental problems.

Report

(4 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • 1995 Annual Research Report
  • Research Products

    (35 results)

All Other

All Publications (35 results)

  • [Publications] N.Mori 他: "A technique for precise magneto-transport measurements at low temperatures under pressure up to 8 GPa" Physica B in press.(1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] J.Tang 他: "High Pressure Apparatus for in situ X-ray Diffraction and Electrical Resistance Measurement at Low Temperature" Rev.High Pressure Sci.Technol.Vol.7. 1496-14498 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Y.Uwatoko 他: "High Pressure Apparatus for Magnetization Measurements," Rev.High Pressure Sci.Technol.Vol.7. 1508-1510 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Akimoto 他: "Pressure Dependence of the Superfluid Fraction in 3He-A," J.Low Temp.phys.101. 727-732 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Hirayama 他: "On Superconductivity of α-(BEDT-TTF)2 KHg(SCN)4 under uniaxial stress below 1 K," Czech.J.Phys.,. 46 Suppl.813-814 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Obara 他: "Compettion of Multiple Spin Exchanges in Submonolayer Sold 3He," Phys.Rev.Lett.81. 2478-2481 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 毛利信男: "圧力発生技術" 丸善株式会社 (発行予定), (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Mori, T.Nakanishi, M.Ohashi, N.Takeshita, H.Goto, S.Yomo and Y.Okayama: "A technique for precise magneto-transport measurements at low temperatures under pressure up to 8 GPa" Physica B. (in press.).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] J.Tang, T.Matsumoto, and N.Mori: "High Pressure Apparatus for in situ X-ray Diffraction and Electrical Resistance Measurement at Low Temperature" Rev.High Pressure Sci.Technol.Vol.7. 1496-14498 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Y.Uwatoko, T.Hotta, E.Matsuoka, H.Mori, T.Ohki, J.L.Sarrao, J.D.Thompson, N.Mori and G.Oomi: "High Pressure Apparatus for Magnetization Measurements" Rev.High Pressure Sci.Technol.Vol.7. 1508-1510 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Akimoto, T.Okuda and H.Ishimoto: "Pressure Dependence of the Superfluid Fraction in 3He-A" J.Low Temp.phys.101. 727-732 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Hirayama, K.Manabe, H.Ishimoto, H.Ito and T.Ishiguro: "On Superconductivity of alpha- (BEDT-TTF) 2KHg (SCN) 4 under uniaxial stress below 1K" Czech.J.Phys.46-Suppl.813-814 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Y.Karaki, Y.Koike, M.Kubota and H.Ishimoto: "Specific heat of beryllium-copper alloy at very low temperature" Cryogenics. 37. 171-172 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Akimoto, T.Okuda and H.Ishimoto: "Normal fluid fraction of superfluid 3He-Al in a high magnetic field" Phys.Rev.B55. 12635-12639 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Okuda, H.Ikegami, H.Akimoto and H.Ishimoto: "Direct observation of Andreev reflection at free surface of superfluid 3He" Phys.Rev.Lett.80. 2857-2860 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Manabe, H.Ishimoto, N.Koide, Y.Sasago and K.Uchinokura: "Antiferromagnetic long-range order in Cul-xZnxGeO3 with extremely low Zn concentration" Phys.Rev.B58. R575-578 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Obara, D.Ito and H.Ishimoto, H.Ikegami: "Competition of Multiple Spin Exchanges in Submonolayer Sold 3He" Phys.Rev.Lett.81. 2478-2481 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] NMon, H.Takahashi, Y.Sekine, A.Ochiai, Y.Haga, T.Suzuki, T.Kashiwakura, S.Nakai, M.Nomura: "Anomalous Transportand Electronic Properties of Yb_4As_3 Under High Pressure" PhisicaB. 230-232. 630-634 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Tamegai, R.Yamada, S.Ooi, T.Shibauchi, C.Murayama and N.Mon: "Effects of hydrostatic pressure and oxgen doping on the vontex phase diagram in Bi_2S_<12>CaCu_2O_<8+y>" PhysicaC. 282-287. 2029-2030 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] NMon, T.Nakanishi, H.Takahashi, T.Nagata, M.Uehara, J.Akimitsu, N.Motoyama, H.Esaki and S.Uchida: "Pressure-Induced Superoonductivity in Quantum Spin-Ladder Compound Sr_<14x>Ca_xCu_<24>O_<41+δ>" PhysicaB. 239. 137-140 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Takano, S.Takayanagi, T.Yamadaya and NMon: "Superconducting Properties of Layered Perovskite Kca_2Nb_3O_<10> and KlaNb_2O_7" Solid State Commun.Vol103. 215-217 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Naka, T.Matsumoto, NMon, Y.Okayama, Y.Haga, T.Suzuki: "Pressure-induced Magnetic transition in CeP" PhysicaB. 239. 245-251 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Nagata, M.Uehara, J.Goto, N.Komiya, J.Akimitsu, N.Motoyama, H.Esaki, S.Uchida, H.Takahashi, T.Nakanishi, NMon: "Superconductivuty in the ladder compound Sr_<2.5>Ca_<11.5>Cu_<41> (single crystal)" PhysicaC. 282-287. 153-156 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] H.Takahashi,N.Mori,T.Matsumoto,T.Kamiyama and H.Asano: "Neutron Powder Diffraction Studies at High Pressure Using a Pulsed Neutron Source" High Pressure Research. 14. 295-302 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Ishida,M.Suzuki,S.Toda,N.Mori and K.Shiratori: "Pressure Effect on the Elastic Constants of Magnetite" Physica B. 219&220. 638-640 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Mizokawa,A.Fujimori,T.Arima,Y.Tokura,N.Mori and J.Akimitsu: "Photoemission and x-ray Absorption Spectroscopy of PrNiO_3" J.Electron Spect.78. 191-194 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Honma,K.Yamaya,N.Mori and M.Tanimoto: "Effect of Oxygen Doping and Pressure on Superconducting Transition Temperature in Y_<0.9>Ca_<0.1>Ba_2Cu_3O_y" Solid State Commun.98. 395-399 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Yashii,M.Kasaya,H.Takahashi,N.Mori: "Effect of Pressure on the Size of Energy Gap in Semiconducting Mixed-valent Rare-earth Compounds" Physica B. 223&224. 412-425 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] R.Kato,Y.Kashimura,S.Aonuma,H.Sawa,H.Takahashi and N.Mori: "p-π Interaction on the (R_1,R_2-DCNQI)_2Cu System" Mol.Cryst.Liq.Cryst.285. 143-150 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Y. Okunuki,N. Mori,A. Ochiai,Y. Haga and T Suzuki: "Pressure Effects on Transport Properties of Yb_4As_3" J. Phys. Soc. Jpn. 64. 533-539 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] R. Kato,Y. Kashimura,N. Mori,H. Sawa,S. Aonuma,M. Tamua,M. Kinoshita,H. Takahashi.: "Crystal Structure and Physical Properties of Molecular Metal(DI-DCNQI)_2Cu (DI_-DCNQI=2,5-Diiodo-N,N′-Dicyanoquinonediimine)" Synthetic Metals. 70. 1077-1078 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Y. Aoki,T. Sambongi,H. Takahashi,N. Mor,J. Levy and H. Berger,: "Hf-Ditelluride: Phase Transition under Pressure" Synthetic Metals. 71. 1883-1884 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Y. Kashimura,H. Sawa,S. Aonuma,R. Kato,H. Takahashi and N. Mor,: "Anomalous Pressure-Tempereture Phase Diagram of the Molecular Conductor,(DI-DCNQI)_2CU(I-DCNQI=2,5-DIIODO-N,N′-Dicyznoquinonedimine)" Solid State Communications. 93. 675-679 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] K. Fukamachi,Y. Ueda,N. Watanabe,K. Tsushima,A. M. Baibashov and N. Mor: "Dependance of Tc on Uniaxial Stressfor Single Crystal of Bi_2Sr_2CaCu_2O_x" Springer. VII. 225-228 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Y. Shimakawa^<a. b. c>,J. D. Jorgensen^a、N. Mori^b,B. A. Hunter^a,H. Shaked^<a,1>,R. L. Hitteman^a,Y. Kubo^b,T.Kondo^b,T.Manako^b,H. takahashi^c: "Pressure effects on T_c and structure in overdoped TISr_2CaCu_2O_<7-8>" Physica. C253. 71-78 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1996-04-01   Modified: 2020-05-15  

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