Study Of Structural, Magnetic And Electric Properties Of Bi0.6-xNdxCa0.4MnO3 (0.0≤x≤0.6) Perovskite Manganites

In the present paper, we have studied structure, magnetic and transport properties of polycrystalline Bi0.6-xNdxCa0.4MnO3 (x=0.0, 0.1, 0.2, 0.3, 0.4, 0.5 and 0.6) samples synthesized via solid state reaction route. The magnetic measurements reveal that the charge ordering temperature (T-CO) decreases with increasing x. Further, the antiferromagnetic (AFM) ordering temperature (T-N) increases sharply at both extremes and remains nearly constant for x= 0.2 - 0.4. At T<T-N a transition to metamagnetic glass like state is also seen. Nd doping also leads to enhancement in the magnetic moment and a concomitant decrease in resistivity up to x=0.3 and then an increase in resistivity up to x=0.5. Further, the Nd-concentration promotes an antiferromagnetic to a ferromagnetic type fluctuation in the materials at room temperature as evidenced by the change in the value of theta(P). The correlation between the observed structural, magnetic and electric properties has been described and discussed in this paper.