Title :
Effects of vanadium doping on the magnetic properties of La0.7Ca0.3MnO3
Author :
Han, K.H. ; Park, S.Y. ; Yu, K.K. ; Park, J.S. ; Lee, Y.P.
Author_Institution :
Dept. of Phys., Hanyang Univ., Seoul, South Korea
Abstract :
The magnetic properties of La0.7Ca0.3Mn1-xVxO3 (x≤0.2) perovskites have been studied. It was found that the V doping resulted in a reduction of the magnetization and a decrease of the Curie temperature. As the concentration of Mn4+ ions is increased in the system, the antiferromagnetic component become dominant against the ferromagnetic interaction. Moreover, the coercive field above the spin-freezing transition temperature is found to follow a double exponential function. The V doping induces a decreased spin-freezing effect in La0.7Ca0.3MnO3 due to an antiferromagnetic long-range order between V and Mn ions.
Keywords :
Curie temperature; calcium compounds; coercive force; doping; ferromagnetic-antiferromagnetic transitions; lanthanum compounds; manganese compounds; vanadium; Curie temperature; La0.7Ca0.3Mn1-xVxO3 perovskites; La0.7Ca0.3MnO3; V; antiferromagnetic component; coercive field; coercive force; ferromagnetic interaction; ferromagnetic-antiferromagnetic transitions; magnetic properties; magnetization reduction; spin-freezing transition temperature; vanadium doping; Antiferromagnetic materials; Colossal magnetoresistance; Doping; Magnetic field measurement; Magnetic properties; Magnetization; Metal-insulator structures; Photonics; Powders; Temperature; Coercive field; Curie–Weiss law; colossal magnetoresistance; domain-wall freezing; spin freezing; vanadium;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.854824
