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Journal of Inorganic Materials

Journal of Inorganic Materials

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Influence of Gd Doping at A Site upon the Magnetic Structure of La0.7-xGdxSr0.3MnO3 System

GUO Huan-Yin1; PENG Zhen-Sheng1; CAI Zhi-Rang1; LIU Ning1,2   

  1. 1. Department of Physics; onclick="TPI_openwindow('/GRID20/knowledgenet.aspx?sdb=CJFD&sfield=%e8%8b%b1%e6%96%87%e4%bd%9c%e8%80%85&skey=Suzhou+College','knet','status=yes,scrollbars=yes,width=375,height=250')">Suzhou College; onclick="TPI_openwindow('/GRID20/knowledgenet.aspx?sdb=CJFD&sfield=%e8%8b%b1%e6%96%87%e4%bd%9c%e8%80%85&skey=Suzhou+234000','knet','status=yes,scrollbars=yes,width=375,height=250')">Suzhou 234000; onclick="TPI_openwindow('/GRID20/knowledgenet.aspx?sdb=CJFD&sfield=%e8%8b%b1%e6%96%87%e4%bd%9c%e8%80%85&skey=China','knet','status=yes,scrollbars=yes,width=375,height=250')">China; onclick="TPI_openwindow('/GRID20/knowledgenet.aspx?sdb=CJFD&sfield=%e8%8b%b1%e6%96%87%e4%bd%9c%e8%80%85&skey=Structure+Research+Laboratory','knet','status=yes,scrollbars=yes,width=375,height=250')">Structure Research Laboratory; onclick="TPI_openwindow('/GRID20/knowledgenet.aspx?sdb=CJFD&sfield=%e8%8b%b1%e6%96%87%e4%bd%9c%e8%80%85&skey=University+of+Science+and+Technology+of+China','knet','status=yes,scrollbars=yes,width=375,height=250')">University of Science and Technology of China; 2. onclick="TPI_openwindow('/GRID20/knowledgenet.aspx?sdb=CJFD&sfield=%e8%8b%b1%e6%96%87%e4%bd%9c%e8%80%85&skey=Hefei+230026','knet','status=yes,scrollbars=yes,width=375,height=250')">Hefei 230026; onclick="TPI_openwindow('/GRID20/knowledgenet.aspx?sdb=CJFD&sfield=%e8%8b%b1%e6%96%87%e4%bd%9c%e8%80%85&skey=China%ef%bc%89','knet','status=yes,scrollbars=yes,width=375,height=250')">China
  • Received:2004-05-26 Revised:2004-08-03 Published:2005-05-20 Online:2005-05-20

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Abstract: M-T curves, M-H curves, and electron-spin-resonance spectra (ESR) of La0.7-xGdx-Sr0.3MnO3(0.0≤x≤0.70) were investigated. The experimental results indicate that the system is in a ferromagnetic long-range order at Gd low-doping level; at x=0.30 and 0.40, the samples show cluster-spin glass behavior; at x≥0.50, the system possesses the antiferromagnetic characters. For the samples x=0.30 and 0.40, ESR spectra demonstrate that the phase separation occurs at the temperature far above Tc.

Key words: colossal magnetoresistance effect, magnetic structure, phase separation

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