Structural and magnetic properties of La₀.₈₅Ca₀.₁₅Mn₁₋ₓCrₓO

Chromium (Cr) is doped at the Mn site of La₀.₈₅Ca₀.₁₅MnO₃ system to explore its complex ferromagnetic insulating (FMI) state. The Rietveld refinement of neutron diffraction data indicates that there is no structural change owing to Cr substitution in La₀.₈₅Ca₀.₁₅Mn₁₋ₓCrₓO₃ (0≤x≤0.1). Nevertheless, i...

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Bibliographic Details
Published inMaterials letters Vol. 65; no. 5; pp. 922 - 925
Main Authors Mollah, S, Dhiman, I, Das, A
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2011
Subjects
chromium
couplings
magnetic properties
manganese
temperature
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Summary:Chromium (Cr) is doped at the Mn site of La₀.₈₅Ca₀.₁₅MnO₃ system to explore its complex ferromagnetic insulating (FMI) state. The Rietveld refinement of neutron diffraction data indicates that there is no structural change owing to Cr substitution in La₀.₈₅Ca₀.₁₅Mn₁₋ₓCrₓO₃ (0≤x≤0.1). Nevertheless, it strengthens the magnetic couplings and the system shifts towards enhanced ferromagnetic (FM) ordering. Doping with Cr is found to stabilise the FMI state at low temperatures. The magnetic moment of the parent compound (for x=0) obtained from neutron diffraction data recorded at low temperature (17K) is found to be ~3.53(5)μB and is close to the theoretically estimated value of 3.85μB. This value is higher than previously reported value of 2.90μB.
Bibliography:http://dx.doi.org/10.1016/j.matlet.2010.11.057
ISSN:0167-577X
1873-4979