The relationship between field-cooled and zero-field-cooled susceptibilities of some ordered magnetic systems

Abstract

Analysis of the irreversible field-cooled (FC) and the zero-field-cooled (ZFC) magnetic susceptibilities of one ferrimagnetic and three ferromagnetic systems, measured at different applied magnetic fields, shows that the irreversibility indicated by the difference between the FC and the ZFC susceptibilities arises from magnetic anisotropy. The two susceptibilities are related to each other through the coercivity which is a measure of the anisotropy. The ZFC susceptibility can be calculated from the FC susceptibility (or vice versa) and the coercivity.

Magnetic behavior of melt-spun gadolinium

“…19,20 However, a ZFC/FC bifurcation similar to that exhibited by ms-Gd was also observed in several perovskite ferromagnets. 21,22 In these materials, the ZFC/FC irreversibility is not due to magnetic glassiness, but to the effects of anisotropy in the ferromagnetic state. Note that the ZFC/FC irreversibility exhibited by a ferromagnetic material is also attributed to domain freezing.…”

Structural, magnetic, magneto-transport properties and Bean–Rodbell model simulation of disorder effects in Cr3+ substituted La0.67Ba0.33MnO3 nanocrystalline synthesized by modified Pechini method

“…The ZFC curves lie somewhat lower than the FC curves. This was attributed to the more random frozen magnetic conguration than that achieved in the FC cases, 27 which is usually observed easily in nano-sized materials due to the increased boundary/surface effects. With increasing chromium content x the transitions become broader and show prominent divergence between the ZFC and FC curves (see Fig.…”

Spin-canted magnetism and decoupling of charge and spin ordering in NdNiO3

“…[50][51][52][53][54] Below the temperature of magnetic ordering, a magnetically ordered material consists of uniformly magnetized regions which are known as magnetic domains. At any temperature T and applied field H, the free energy of the magnetic systems have a number of local minima which are determined by the arrangement of the domains inside the magnetic material.…”