DOI: 10.1039/d6ra05041g ISSN: 2046-2069
Superexchange disruption and anomalous magnetic anisotropy in Fe 3− x Lu x<
N. T. Dang, D. P. Kozlenko, S. E. Kichanov, A. V. Rutkauskas, N. H. Nam, N. D. Minh, D. P. T. Tien, N. T. Nguyen, T. A. Tran, Y. D. Mitskevich, A. A. Kharchanka, J. A. Fedotova, G. S. Rymski, A. L. Zhaludkevich, Pham Thanh Phong, Truong-Tho NguyenLu 3+ preferentially occupies octahedral B sites in Fe 3 O 4 nanoparticles, disrupting J AB superexchange, enhancing magnetic inhomogeneity, and inducing blocked and superparamagnetic spin coexistence, thereby tuning magnetic anisotropy and coercivity.