Improvement of the Magnetization and Coercivity of La{sub 0.67}Ca{sub 0.33}MnO{sub 3} Induced by Substitution of Nickel for Manganese

Journal Article · Thu Feb 15 04:00:00 EST 2018 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-017-4200-8· OSTI ID:22774131

Zhou, Yuan ^[1]; Wu, Xuehang ^[2]; Wu, Wenwei; Wen, Chen; Wang, Qing ^[1]

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1. Guangxi University, School of Chemistry and Chemical Engineering (China)
2. Guangxi University, Collaborative Innovation Center of Renewable Energy Materials (China)

La{sub 0.67}Ca{sub 0.33}Mn{sub 1−x}Ni{sub x}O{sub 3} (0 ≤x ≤ 0.3) is synthesized by solid-state reaction at low temperatures, followed by calcination in air. The precursor and its calcined products are characterized by thermogravimetry and differential scanning calorimetry, x-ray powder diffraction, scanning electron microscopy, and vibrating sample magnetometer. A high-crystallized La{sub 0.67}Ca{sub 0.33}Mn{sub 1−x}Ni{sub x}O{sub 3} with an orthorhombic structure is obtained when the precursor is calcined at 900{sup ∘}C in air for 3 h. Crystallite size of La{sub 0.67}Ca{sub 0.33}Mn{sub 1−x}Ni{sub x}O{sub 3} increases with the increase of Ni content, attributed to the decrease of lattice strains of the La{sub 0.67}Ca{sub 0.33}Mn{sub 1−x}Ni{sub x}O{sub 3} with the increase in Ni content. Nickel substitution can markedly improve coercivity and specific magnetization of La{sub 0.67}Ca{sub 0.33}Mn{sub 1−x}Ni{sub x}O{sub 3}. The coercive field (9 Oe) of La{sub 0.67}Ca{sub 0.33}Mn{sub 0.7}Ni{sub 0.3}O{sub 3} is higher, even at 293 K, indicating that La{sub 0.67}Ca{sub 0.33}Mn{sub 0.7}Ni{sub 0.3}O{sub 3} continues being ferromagnetic above 260 K (Curie temperature for LCMO).

• OSTI ID: 22774131
• Journal Information: Journal of Superconductivity and Novel Magnetism, Journal Name: Journal of Superconductivity and Novel Magnetism Journal Issue: 2 Vol. 31; ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AIR
CALCINATION
CALORIMETRY
COERCIVE FORCE
CURIE POINT
LANTHANUM COMPOUNDS
MAGNETIC PROPERTIES
MAGNETIZATION
MANGANESE
NICKEL
ORTHORHOMBIC LATTICES
SCANNING ELECTRON MICROSCOPY
STRAINS
TEMPERATURE RANGE 0065-0273 K
THERMAL GRAVIMETRIC ANALYSIS
VIBRATING SAMPLE MAGNETOMETERS
X-RAY DIFFRACTION