Giant magnetoresistance in bulk La{sub 0.6}Mg{sub 0.4}MnO{sub 3}

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · Journal of Materials Research

DOI:https://doi.org/10.1557/JMR.1997.0353· OSTI ID:554347

Li, Y; Duan, X F; Zhang, J H; Wang, H R; Qian, Y T ^[1]; Huang, Z; Zhou, J; Yuan, S L ^[2]; Lin, W; Zhu, C F ^[3]

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1. Department of Applied Chemistry, University of Science Technology of China, Hefei, Anhui 230026, Peoples Republic of (China)
2. High Magnetic Laboratory, Institute of Plasma Physics, Academia Sinica, Hefei, Anhui 230031, Peoples Republic of (China)
3. Laboratory of Internal Friction and Defects in Solids, Academia Sinica USTC, Hefei, Anhui 230026. Peoples Republic of (China)

A bulk sample La{sub 0.6}Mg{sub 0.4}MnO{sub 3} has been prepared from coprecipitated carbonate precursor for the first time in this study. Structure analysis conducted by powder x-ray diffraction indicates that the sample is in cubic perovskite phase. It shows a metal-insulator transition at 115 K (T{sub p}). When applied to an external field, GMR effects are observed in the whole measured temperature range. The maximum negative MR value reaches as large as 480{percent} at 105 K and 5 T. There may be two different mechanisms governing the GMR effects in the sample for the temperatures below and above T{sub p}. {copyright} {ital 1997 Materials Research Society.}

• OSTI ID: 554347
• Journal Information: Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 10 Vol. 12; ISSN JMREEE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHEMICAL PREPARATION
CRYSTAL STRUCTURE
LANTHANUM OXIDES
MAGNESIUM OXIDES
MAGNETORESISTANCE
MANGANESE OXIDES
PHASE TRANSFORMATIONS
TEMPERATURE DEPENDENCE