Exchange-bias feature in core-shell nanoparticles

On the first evidence of exchange-bias feature in magnetically contrasted consolidates made from CoFe 2 O 4 -CoO core-shell nanoparticles.
Nancy Flores-Martinez, Giulia Franceschin, Thomas Gaudisson, Sonia Haj-Khlifa, Sarra Gam Derouich, Nader Yaacoub, Jean-Marc Grenèche, Nicolas Menguy, Raul Valenzuela & Souad Ammar
Scientific Reports 9, 19468 (2019)

Thermal variation of the saturation and remanent magnetizations (a) and that of the coercive and exchange magnetic fields (b) of CFO-CO ceramic, as inferred from its FC hysteresis loops (cooling field of 7 T) recorded at different temperatures.