Study of critical behavior in ferromagnetic LaCr_0.3Mn_0.7O₃

The critical exponent behavior of LaCr_0.3Mn_0.7O₃ compound in the vicinity of ferromagnetic transition was studied by measuring isothermal dc magnetization and by analyzing them in terms of modified Arrott plot method. The critical exponents β, γ and δ corresponding to the spontaneous magnetization, initial magnetic susceptibility and isothermal magnetization with T_C=186 K were determined to be 0.325±0.006, 1.247±0.066 and 4.823±0.004 respectively and are found to be comparable to the values predicted by 3D Ising model. The obtained result is discussed in terms of presence of strong magnetic anisotropy. - Highlights: • We have reported the critical exponent study of LaCr_0.3Mn_0.7O₃ compound. • It was analyzed in terms of modified Arrott plot method. • The estimated values of β, γ and δ are found to be close to 3D Ising model values.