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Physica E Low-dimensional Systems and Nanostructures

Magnetic properties of the spin-5/2 Blume-Capel chain in a magnetic field

Mehmet Gökhan Şensoy, Mehmet Batı

Published May 8, 2019• 4 citations
Publisher
DOI
10.1016/j.physe.2019.04.016

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Abstract We employed the classical transfer matrix technique to investigate the magnetization and quadrupolar plateaus, phase diagrams and other thermodynamical properties of the one‐dimensional antiferromagnetic spin‐3/2 and spin‐2 Blume–Capel model in the presence of an external magnetic field at very low temperatures. We showed that single‐ion anisotropy is one of the indispensable ingredients for an energy gap which causes to magnetization and quadrupolar plateaus in one‐dimensional antiferromagnetic Ising spin chains. Other thermodynamical predictions seem to be provide this argument. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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A magnetic property of the one dimensional spin-7/2 Blume-Capel model under the magnetic field has been investigated by means of transfer matrix method. Thermodynamic response functions are also obtained for varying values of reduced thermodynamic temperature and scaling magnetic field. We have seen that the crystal field strongly affects magnetic plateau mechanism. Our simulation results demonstrate that the plateau becomes smoother when the value of the temperature increased. Entropy of the system goes to zero rapidly for positive crystal field values so we see only saturation values of the system. We observed that the minimum of specific heat tends to shift to the relatively lower thermodynamic temperature regions as the strength of the crystal field is increased.
Abstract We employed the classical transfer matrix technique to investigate the magnetization and quadrupolar plateaus, phase diagrams and other thermodynamical properties of the one‐dimensional antiferromagnetic spin‐3/2 and spin‐2 Blume–Capel model in the presence of an external magnetic field at very low temperatures. We showed that single‐ion anisotropy is one of the indispensable ingredients for an energy gap which causes to magnetization and quadrupolar plateaus in one‐dimensional antiferromagnetic Ising spin chains. Other thermodynamical predictions seem to be provide this argument. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)