An ab-initio study of induced half metallic ferromagnetism in Hf–Nb alloy oxides Rajesh Kumar, Sangeeta, Ramesh Kumar, Ramesh K. Bibiyan, Mukhtiyar Singh and Ankush Vij Eur. Phys. J. Plus, 138 6 (2023) 561 Published online: 25 June 2023 DOI: 10.1140/epjp/s13360-023-04179-8