NDLI: Effect of Co$^{3+}$ substitution on the structure and magnetic properties of La$_{0.6}$Ca$_{0.4}$MnO$

Content Provider	Springer Nature Link
Author	Huang, Xusheng Chen, Wen Wu, Wenwei Zhou, Yuan Wu, Juan Wang, Qing Chen, Yuye
Copyright Year	2016
Abstract	The effect of cobalt doping on the structure and magnetic properties of polycrystalline La$_{0.6}$Ca$_{0.4}$Mn$_{1−x }$Co$_{ x }$O$_{3}$ (0 ≤ x≤0.3) has been studied. X-ray powder diffraction and magnetization measurements have been performed. A high-crystallized La$_{0.6}$Ca$_{0.4}$Mn$_{1−x }$Co$_{ x }$O$_{3}$ with an orthorhombic structure is obtained when the precursor is calcined at 900 °C in air for 3 h. Different amounts of Co$^{3+}$ ion doping do not lead to the formation of another phase except diffraction peaks shifts slightly. With increase in Co$^{3+}$ doping from x = 0, 0.1, 0.2, to 0.3, lattice parameters (b value) increase at first, then decrease. Magnetic characterization indicates that specific magnetization of La$_{0.6}$Ca$_{0.4}$Mn$_{1−x }$Co$_{ x }$O$_{3}$ decreases with the increase of Co$^{3+}$ additional amount; substitution of Mn by Co$^{3+}$ ion can markedly increase the coercive field of La$_{0.6}$Ca$_{0.4}$Mn$_{1−x }$Co$_{ x }$O$_{3}$, attributed that Co$^{3+}$ doping can decrease Mn$^{3+}$/Mn$^{4+}$ ratio in La$_{0.6}$Ca$_{0.4}$Mn$_{1−x }$Co$_{ x }$O$_{3}$. La$_{0.6}$Ca$_{0.4}$Mn$_{0.7}$Co$_{0.3}$O$_{3}$ at 100 K had the highest coercive field value, 1889.7 Oe. The coercive field of La$_{0.6}$Ca$_{0.4}$Mn$_{1−x }$Co$_{ x }$O$_{3}$ is between 35.1 and 114.7 Oe, even at 200 K, indicating that La$_{0.6}$Ca$_{0.4}$MnO$_{3}$ and doped Co$^{3+}$ La$_{0.6}$Ca$_{0.4}$Mn$_{1−x }$Co$_{ x }$O$_{3}$ continue being ferromagnetic at 200 K.
Starting Page	5395
Ending Page	5402
Page Count	8
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	27
Issue Number	5
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2016-02-05
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical and Electronic Materials Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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