Structural and Magnetic Properties of La₀.₇Sr₀.₃Mn₁₋ₓCrₓO₃(X≤0.5)

Magnetic and structural properties of La0.7Sr 0.3Mn1 - xCrx O3 (X≤0.5), 0.10, 0.20, 0.30, 0.40 and 0.50) have been studied using neutron and x-ray diffraction and magnetic measurements. All samples are found to be of single phase. At 12 K, we find only ferromagnetic ordering for x < 0.30 and coexisting ferromagnetic and antiferromagnetic domains for x ≥ 0.30. Our magnetic data indicate temperature dependent ferromagnetic to paramagnetic, and likely antiferromagnetic to paramagnetic transitions. We find no evidence of spin glass or cluster glass behavior, only long-range magnetic order with a transition to antiferromagnetic behavior beginning with x = 0.30 and almost completely antiferromagnetic behavior at x = 0.50. © 2006 IEEE.