NDLI: Electrical transport and magnetic properties of La$_{0.67}$Ca$_{0.33}$Mn$_{1−x }$Cr$_{ x }$O$_{3}$ and La0$_{.67+x }$Ca$_{0.33−x }$ Mn$_{1−x }$Cr$_{ x }$O$

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Electrical transport and magnetic properties of La$_{0.67}$Ca$_{0.33}$Mn$_{1−x }$Cr$_{ x }$O$_{3}$ and La0$_{.67+x }$Ca$_{0.33−x }$ Mn$_{1−x }$Cr$_{ x }$O$_{3}$(0.04≤x≤0.08)

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Electrical transport and magnetic properties of La$_{0.67}$Ca$_{0.33}$Mn$_{1−x }$Cr$_{ x }$O$_{3}$ and La0$_{.67+x }$Ca$_{0.33−x }$ Mn$_{1−x }$Cr$_{ x }$O$_{3}$(0.04≤x≤0.08)

Content Provider	SpringerLink
Author	Xiao, Xun Yuan, Songliu Yin, Shiyan Chen, Ling Ren, Guangming Miao, Juhong Yu, Gongqi
Copyright Year	2008
Abstract	A comparative study for two different series, La$_{0.67}$Ca$_{0.33}$Mn$_{1−x }$Cr$_{ x }$O$_{3}$ and La$_{0.67+x }$Ca$_{0.33−x }$Mn$_{1−x }$Cr$_{ x }$O$_{3}$, is performed with χ changing from 0.04 to 0.08 through measurements of zero-field resistivity (π), magnetoresistance (MR) and ac susceptibility (χ) as functions of temperature (T). For the second group, a single insulator-metal transition was characterized by the resistivity maximum appears in π vs. T curve. For the first group, besides the resistivity peak appearing at higher temperatures, the sample shows evidence for the existence of another peak appearing at lower temperatures. Compared to the first group, the second group shows a significant enhancement in MR effect, while the measurement of χ-T dependence does not display obvious differences for the two series. Different behaviors observed in the two series are discussed by considering possible exchange interaction between Mn$^{3+}$ ion and Cr$^{3+}$ ion.
Starting Page	463
Ending Page	466
Page Count	4
File Format	PDF
ISSN	10002413
Journal	Journal of Wuhan University of Technology-Mater. Sci. Ed.
Volume Number	23
Issue Number	4
e-ISSN	19930437
Language	English
Publisher	Wuhan University of Technology
Publisher Date	2008-09-11
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	perovskite manganites double exchange metal-insulator transition colossal magnetoresistance Materials Science
Content Type	Text
Resource Type	Article
Subject	Materials Science

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