In this Reply we show that the thermal characteristic of μp increases with increasing temperature remains when size distribution of the nanoparticle assembly has been accounted for. In addition, the antiferromagneticlike or ferrimagneticlike spin configuration is also required to understand the two-component hysteresis observed in the M (Ha) curves. The appearance of hysteresis in the low Ha regime [Fig. 4 of W.-H. Li, C.-W. Wang, C.-Y. Li, C. K. Hsu, C. C. Yang, and C.-M. Wu, Phys. Rev. B 77, 094508 (2008)10.1103/PhysRevB. 77.094508] indicates the existence of a net spontaneous moment in the nanoparticle, whereas the enlarged hysteresis at the high Ha regime can be the results of the occurrence of spin reorientation of the core and surface macromoments triggered by the applied magnetic field.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - 22 Jul 2010|