Interaction effects in the remanence curves of CoTi-doped BaFe systems

Factors influencing the remanent properties of hard magnetic barium ferrites: Impurity phases and grain sizes

“…On the contrary, it limits the storage density of magnetic recording media. Our literature search has shown that studies on the interaction effects in BaFe systems are rather scarce [1][2][3][4][5].…”

Self-stabilized magnetic colloids: Ultrafine Co particles in polymers

“…The presence of both types of interactions in the same sample has been previously observed. 18,19 Contrary to the nanocomposites, particles without the polymer matrix do not exhibit evidence of any magnetizing interactions. The data shown in Fig.…”

Moving vector Preisach hysteresis model and δM curves

“…Thus 6M is given by : 6M = -2 (r+E'+E") / Ir. (2) All the basic modeIs used in the dispersed model have negative 6M curves, thus the resulting 6M c w e is also negative. An intuitive explanation of this result is that when the border is moving, it reverses mainly particles whose interaction field is opposite in sign to the magnetization.…”

“…Some materials, such as barium ferrite particulate media, exhibit positive 6M curves, which is attributed to positive interaction and collective reversal mechanisms. Positive interaction is known to result in high S* values and sharp but noisy transitions [2], but there is no limiting value of S* that would allow identification of positive interaction only from the major Bertotti has published an interesting analysis of interaction in which he has proven that the classical Preisach model can give raise to only negative 6 M curves [3]. Vajda and Della Torre have been able to reproduce positive 6M curves by using positive feedback in their moving scalar Preisach model [4].…”

“…During the last decade, the remanence and the 6M curves have been widely used to characterize interaction [1,2]. In Fig.…”