Volume 18 Issue 1
Apr 2015
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TANG Yan-Kun, SUI Yu, QIAN Zheng-Nan, LIU Yu-Qiang, XU Da-Peng, SU Wen-Hui. Effect of Preparation Pressure on Magnetoresistance of La2/3Sr1/3MnO3[J]. Chinese Journal of High Pressure Physics, 2004, 18(1): 36-39 . doi: 10.11858/gywlxb.2004.01.007
Citation: TANG Yan-Kun, SUI Yu, QIAN Zheng-Nan, LIU Yu-Qiang, XU Da-Peng, SU Wen-Hui. Effect of Preparation Pressure on Magnetoresistance of La2/3Sr1/3MnO3[J]. Chinese Journal of High Pressure Physics, 2004, 18(1): 36-39 . doi: 10.11858/gywlxb.2004.01.007

Effect of Preparation Pressure on Magnetoresistance of La2/3Sr1/3MnO3

doi: 10.11858/gywlxb.2004.01.007
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  • Corresponding author: SUI Yu
  • Received Date: 07 Apr 2003
  • Rev Recd Date: 20 Jun 2003
  • Publish Date: 05 Mar 2004
  • The effect of preparation pressure on the structural, magnetic and electronic properties has been investigated for nanostructured bulk samples of La2/3Sr1/3MnO3. The results show that the grain size decreases and magnetoresistance varies with preparation pressure growth. Low-field magnetoresistance weakens in the whole experimental temperature range when preparation pressure increases, which can mainly attribute to stronglink grain boundaries of samples under high preparation pressure. And highfield magnetoresistance gradually becomes stronger at T200 K, however becomes weaker at T200 K with the increase of preparation pressure, which can mainly due to the change of grain size caused by preparation pressure.

     

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  • von Helmolt R, Wocker J, Holzapfel B, et al. Giant Negative Magnetoresistance in Perovskite La2/3Ba1/3MnO3 Ferromagnetic Films [J]. Phys Rev Lett, 1993, 71: 2331.
    Hwang H Y, Palstra T T M, Cheong S-W , et al. Pressure Effects on the Magnetoresistance in Doped Manganese Perovskites [J]. Phys Rev B, 1995, 52 (21): 15046.
    Coey J M D. Powder Magnetoresistance(Invited) [J]. J Appl Phys, 1999, 85(8): 5576.
    Dai J B, Tang J K. Temperature Dependence of the Conductance and Magnetoresistance of CrO2 Powder Compacts [J]. Phys Rev B, 2001, 63: 64410.
    Hernandez M G, Guinea F, de Andres A, et al. Coulomb Blockage versus Intergrain Resistance in Colossal Magnetoresistive Manganite Granular Films [J]. Phys Rev B, 2000, 61(14): 9549.
    Wang X L, Dou S X, Liu H K, et al. Large Low-Field Magnetoresistance over a Wide Temperature Range Induced by Weak-Link Grain Boundaries in La0. 7Ca0. 3MnO3 [J]. Appl Phys Lett, 1998, 73(3): 396.
    Fontcuberta J, Martinzz B, Laukhin V, et al. Bandwidth Control of the Spin Diffusion through Interfaces and the Electron-Phonon Coupling in Magnetoresistive Manganites [J]. Phil Trans R Soc Lond A, 1998, 356: 1577.
    Evetts J E, Blamire M G, Mathur N D, et al. Defect-Induced Spin Disorder and Magnetoresistance in Single-Crystal and Polycrystal Rare-Earth Manganite Thin Films [J]. Phil Trans R Soc Lond A, 1998, 356: 1593.
    Hwang H Y, Cheong S-W, Ong N P, et al. Spin-Polarized Intergrain Tunneling in La2/3Sr1/3MnO3 [J]. Phys Rev Lett, 1996, 77(10): 2041.
    Zhang N, Ding W P, Zhong W, et al. Tunnel-Type Giant Magnetoresistance in the Granular Perovskite La0. 85Sr0. 15MnO3 [J]. Phys Rev B, 1997, 56(13): 8138.
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