Abstract
Polycrystalline CaMn1-xNbxO3 compounds (x = 0.1, 0.2, 0.3) were synthesized by a solid reaction. CaMn1-xNbxO3 crystallizes in an orthorhombic GdFeO3-type structure. The Nd doping causes the increases of the lattice parameters, unit cell volume, the average Mn−O bond distance, and Mn−O−Mn bond angle. CaMn1-xNbxO3 compounds show magnetic phase inhomogeneity. With increasing the Nb concentration, CaMn1-xNbxO3 compounds exhibit ferromagnetic, metamagnetic, antiferromagnetic, and paramagnetic characterizations, respectively. And their magnetizations significantly reduce. CaMn1-xNbxO3 compounds are insulators in the temperature range from 5 to 400 K, and their resistivities enhance with increasing Nb content. A huge asymmetry resistivity hysteresis loop is observed for the CaMn0.9Nb0.1O3 compound at low temperature; however, this resistivity loop is melting with increasing the applied field and temperature and tends to disappear near the Curie temperature. This phenomenon might be due to the Nb doping inducing ...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
