Abstract
We report the remarkable phase separation behavior in La0.67Sr0.33MnO3 doped with Bi3+ ion at La site. The temperature dependent resistivity and magnetization of La0.67−xBixSr0.33MnO3 (x>0) show the presence of phase separation of ferromagnetic metallic and charge ordered antiferromagnetic insulating phases. Markedly, the field dependant magnetization studies of La0.67−xBixSr0.33MnO3 (x=0.3) show the metamagnetic nature of ferromagnetic metallic state implying the competition of coexisting ferromagnetic metallic and charge ordered antiferromagnetic phases. The electron spin resonance and exchange bias studies of La0.67−xBixSr0.33MnO3 (x=0.4 and 0.5) substantiate the coexistence of ferromagnetic clusters in antiferromagnetic matrix.
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•La0.67−xBixSr0.33MnO3 show the transition from rhombohedral to orthorhombic structure.•Resistivity and magnetization for x>0 show phase separation of FMM and AFI phases.•La0.37Bi0.3Sr0.33MnO3 exhibits a competition of FMM and AFI phases.•Magnetization and ESR illustrate coexisting FM clusters in AFM matrix for x=0.4, 0.5.