Magnetic behavior of a non-extensive S-spin system: possible connections to manganites

TL;DR

This paper explores the magnetic properties of a non-extensive S-spin system using Tsallis statistics, revealing unusual behaviors and potential relevance to manganite materials with long-range interactions.

Contribution

It demonstrates the applicability of nonextensive statistical mechanics to magnetic systems and connects theoretical predictions with experimental manganite data.

Findings

Unusual magnetization, entropy, and susceptibility properties emerge due to nonextensivity.

Qualitative agreement with experimental data on specific manganites.

Highlights the relevance of nonextensive approach to materials with long-range interactions.

Abstract

We analyzed the magnetic behavior of a S-spin system within framework of the Tsallis nonextensive statistics, employing the normalized approach. Unusual properties on magnetization, entropy and susceptibility emerge, as a consequence of nonextensivity. We further show that the nonextensive approach can be relevant to the field of manganites, materials which exhibit long-range interactions and fractality, two basic ingredients for nonextensivity. Our results are in qualitative agreement to experimental data in La$_{0.67}$Ca$_{0.33}$MnO$_3$ and Pr$_{0.5}$Ca$_{0.5}$Mn$_{0.95}$Ga$_{0.05}$O$_3$ manganites.