Griffiths phase in solid-solution of ferromagnetic manganite and cobaltite

2011/09/06 by D. Bhoi, N. Khan, Bhoi, D. +9
Physics and Astronomy · #FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.1109.1090

5 pages, 3 Figures

arxiv created 2011/09/06 · arxiv updated 2011/09/07

Abstract

We report the existence of Griffiths phase (GP) over a wide range of x in La_0.6Sr_0.4Mn_1-xCo_xO₃, the solid solution of ferromagnetic (FM) La_0.6Sr_0.4MnO₃ and La_0.6Sr_0.4CoO₃, from magnetization measurements. In this compound, GP arises due to the quenching of randomly distributed Co-O-Mn antiferromagnetic bonds in the FM background. In contrary to divalent doped manganites, GP in the present system can exist entirely in the metallic state above T_C (for x<0.10). Based on the present study, a magnetoelectronic phase diagram is drawn.

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