Enhancing the magnetic moment of ferrimagnetic NiCo2O4 via ion irradiation driven oxygen vacancies oleh Parul Pandey, Yugandhar Bitla, Matthias Zschornak, Mao Wang, Chi Xu, Jörg Grenzer, Dirk-Carl Meyer, Yi-Ying Chin, Hong-Ji Lin, Chien-Te Chen, Sibylle Gemming, Manfred Helm, Ying-Hao Chu, Shengqiang Zhou