Abstract
The study reveals the comparison of Nd0.9Pr0.1CrO3 and Nd0.9Eu0.1CrO3 samples where the A-site is doped by Pr3+ having the larger ionic radius (1.126 A°) corresponding to less chemical pressure and Eu3+ (1.066 A°) having the smaller ionic radius corresponding to enhanced chemical pressure exerted on the NdCrO3, with the help of X-ray diffraction, Raman spetroscopy, UV-visible spectroscopy, and dc magnetization measurements. The different spin configuration Pr3+ (J = 4) and Eu3+ (J = 0) altering the strong coupling between Nd3+ (J = 9/2) and Cr3+ (S = 3/2) spins result in the variation of the optical band gap, fermi energy and exchange bias.
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