Magnetocaloric effect in ferromagnetic and ferrimagnetic systems under first and second order phase transition

Thermodynamic properties of a diluted Heisenberg ferromagnet with interaction anisotropy—Magnetocaloric point of view

“…This motivates the studies of magnetocaloric properties of threedimensional models using the approximate methods for the thermodynamic description. Some studies focus on the magnetocaloric properties in the vicinity of phase transition [21][22][23][24][25]. Another issue of interest is the existence of some universal relations for characteristics of magnetocaloric effect [26][27][28][29].…”

Cluster Method Calculation of the Curie Temperature and Exchange Parameters for the Magnetocaloric Compounds MnFeAs x P1 − x (0.25 ≤ x ≤ 0.65) and Hexagonal MnFeAs

“…Exchange coupling constants, crystallographic data, and magnetization measurements have been combined in a unified analysis [12,13,16,17]. One objective of the present work was to construct a model for the magnetic moment interactions in these compounds more accurate than that resulting from plain MFT [1][2][3]. For this purpose, Callen's cluster expansion method [10,11] was adopted to analyze the interactions in the spin system.…”

“…Such theoretical studies provide helpful guidance to the experimentalist or materials scientist in search of optimized compositions to try or of novel properties to measure and explore. In particular, the development of materials for magnetic refrigeration has motivated a series of papers dedicated to the simulation and phenomenological description of their thermomagnetic properties [1][2][3]. In the present paper, we shall concentrate on materials of this kind and their magnetic properties.…”

Magnetic Memory and the Promising Magnetocaloric Effect of Sn0.6Cr0.1Ge0.3Te Solid Solution Synthesized by Sealed Tube Solid-State Reaction

“…This unique phenomenon, which reveals the thermal history of the field cooling (FC) magnetization state throughout a heating cycle, manifests as step-like behavior with dips around the stopping temperatures. Interestingly, this characteristic presents an opportunity to develop an innovative type of thermally driven magnetic memory called a “thermal assistant memory cell,” which enables digital information storage. , When a magnetic material is exposed to changes in the applied magnetic field, the magnetocaloric effect (MCE) occurs through an adiabatic process, where the material responds to temperature changes. , These processes are measured by isothermal entropy and adiabatic temperature change. Magnetic refrigeration, which is more efficient and environmentally friendly than common gas compression expansion refrigeration, is the main application of MCE. , Magnetocaloric materials also have significant potential for various applications, such as magnetic random-access memory, magnetic field sensors, and information storage technology devices. − …”