Magnetization of Zn1-xCoxO nanoparticles: single-ion anisotropy and spin clustering - Gratens, Xavier Pierre Marie; Silva, Bruno de Abreu; Bernardi, Maria Inês Basso; Carvalho, Hugo Bonette de; Franco Júnior, Adolfo; Chitta, Valmir Antonio (Journal of Alloys and Compounds, 2023)