Finite-size effects and charge ordering suppresion on manganite NPs

Particle-size effects on the suppression of charge ordering in Nd0.8Na0.2MnO3
B. Samantaray, S. K. Srivastava, and S. Ravi
J. Appl. Phys. 111, 013919 (2012)

The phase diagrams of Nd0.8Na0.2MnO3 for (a) D=700-nm, (b) D=250-nm, and (c) D=140-nm particle-size samples
obtained from magnetization measurements. Open and closed circles represent the threshold fields HC1 and HC2, respectively, and stars represent HS values.