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The magnetothermodynamics of strongly frustrated classical Heisenberg antiferromagnets on kagome, garnet, and pyrochlore lattices is examined. The field induced adiabatic temperature change (dT/dH)_S is significantly larger for such systems…

Strongly Correlated Electrons · Physics 2007-05-23 M. E. Zhitomirsky

We report the magnetic entropy change (Delta Sm) in magnetoelectric Eu1-xBaxTiO3 for x = 0.1- 0.9. We find - delta Sm = 11 (40) J/kg.K in x = 0.1 for a field change of 1 (5) Tesla respectively, which is the largest value among all Eu-based…

Materials Science · Physics 2015-06-17 Km Rubi , Pawan Kumar , D. V. Maheswar Repaka , Ruofan Chen , Jian-Sheng Wang , R. Mahendiran

The magnetic $H$-$T$ phase diagram and magnetocaloric effect in the recently discovered high-temperature heavy-fermion compound YbCoC$_2$ have been studied. With the increase in the external magnetic field YbCoC$_2$ experiences the…

Strongly Correlated Electrons · Physics 2023-03-15 D. A. Salamatin , V. N. Krasnorussky , A. V. Semeno , A. V. Bokov , A. Velichkov , Z. Surowiec , A. V. Tsvyashchenko

We report the effect of exchange frustration on the magnetocaloric properties of GdCrTiO$_5$ compound. Due to the highly exchange-frustrated nature of magnetic interaction, in GdCrTiO$_5$, the long-range antiferromagnetic ordering occurs at…

Materials Science · Physics 2018-09-26 M. Das , S. Roy , N. Khan , P. Mandal

The magnetocaloric effect is studied at the transition to saturation in the antiferromagnetic spin-1/2 Heisenberg model on the simplest two-dimensional lattices, namely the square and the triangular lattice. Numerical results are presented…

Strongly Correlated Electrons · Physics 2007-05-23 A. Honecker , S. Wessel

EuRhAl4Si2, crystallizes in tetragonal crystal structure and orders antiferromagnetically at ~12 K. The isothermal magnetization along the two principle directions is highly anisotropic despite Eu2+ being an S-state ion. The variation of…

Strongly Correlated Electrons · Physics 2017-05-18 Arvind Maurya , A. Thamizhavel , P. Bonville , S. K. Dhar

The magnetocaloric effect (MCE) in single-crystalline Eu$_5$In$_2$Sb$_6$ was studied over broad temperature ranges and magnetic field intervals, with the magnetic field oriented parallel and perpendicular to the crystallographic…

Frustrated magnets in high magnetic field have a long history of offering beautiful surprises to the patient investigator. Here we present the results of extensive classical Monte Carlo simulations of a variety of models of two dimensional…

Strongly Correlated Electrons · Physics 2009-03-26 L. Seabra , N. Shannon , P. Sindzingre , T. Momoi , B. Schmidt , P. Thalmeier

We investigate the magnetocaloric properties of the two-dimensional frustrated J1-J2 model on a square lattice. This model describes well the magnetic behavior of two classes of quasi-two-dimensional S = 1/2 vanadates, namely the Li2VOXO4…

Strongly Correlated Electrons · Physics 2007-10-04 B. Schmidt , P. Thalmeier , N. Shannon

Low-temperature magnetization processes and magnetocaloric properties of a geometrically frustrated spin-1 Blume-Capel model on a triangular lattice are studied by Monte Carlo simulations. The model is found to display qualitatively…

Statistical Mechanics · Physics 2015-06-17 M. Žukovič , A. Bobák

We report the temperature $T$ and magnetic field $H$ dependence of the thermopower $S$ of an itinerant triangular antiferromagnet PdCrO$_2$ in high magnetic fields up to 32 T. In the paramagnetic phase, the zero-field thermopower is…

We experimentally investigate magnetocaloric effect for single crystals of MnTe altermagnet at the transition to the state with spontaneous spin polarization, i.e. well below the N\'eel temperature of MnTe. The isothermal magnetic entropy…

Mesoscale and Nanoscale Physics · Physics 2025-10-06 N. N. Orlova , V. D. Esin , A. V. Timonina , N. N. Kolesnikov , E. V. Deviatov

Magnetocaloric effect (MCE) in TbCo2-xFex has been studied by dc magnetization measurements.On substituting Fe in TbCo2, not only the magnetic transition temperature is tuned to room temperature, but also the operating temperature range for…

Materials Science · Physics 2011-07-07 Madhumita Halder , S. M. Yusuf , M. D. Mukadam , K. Shashikala

We have investigated the magnetocaloric effect in single and polycrystalline samples of quantum paraelectric EuTiO3 by magnetization and heat capacity measurements. Single crystalline EuTiO3 shows antiferromagnetic ordering due to Eu2+…

Materials Science · Physics 2016-03-30 A. Midya , P. Mandal , Km Rubi , Ruofan Chen , Jian-Sheng Wang , R. Mahendiran , G. Lorusso , M. Evangelisti

We present a thorough study on the magnetoanisotropic properties and magnetocaloric effect in the layered ferromagnetic Cr$_4$Te$_5$ single crystals by performing the critical behaviour analysis of magnetization isotherms. The critical…

Materials Science · Physics 2022-09-20 Shubham Purwar , Susmita Changdar , Susanta Ghosh , S. Thirupathaiah

The multicaloric effect, which represents the reversible entropy change that occurs when both external magnetic and electric fields are applied, is an interesting phenomenon characteristic to multiferroics. Targeting the multicaloric effect…

An external magnetic field induces large relative changes in the entropy of one-dimensional quantum spin systems at finite temperatures. This leads to a magnetocaloric effect, i.e. a change in temperature during an adiabatic…

Strongly Correlated Electrons · Physics 2007-05-23 M. E. Zhitomirsky , A. Honecker

The isothermal entropy change and the adiabatic temperature change for the exactly solved spin-1/2 Fisher's super-exchange antiferromagnet are rigorously calculated in order to examine magnetocaloric properties of the model in a vicinity of…

Statistical Mechanics · Physics 2023-07-19 Lucia Galisova , Jozef Strecka

We study the magnetoelectric and electrocaloric response of strain-engineered, multiferroic SrMnO$_3$, using a phenomenological Landau theory with all parameters obtained from \emph{first-principles}-based calculations. This allows to make…

Materials Science · Physics 2020-04-29 Alexander Edström , Claude Ederer

The magnetocaloric effect in exchange-coupled synthetic-antiferromagnet multilayers is investigated experimentally and theoretically. We observe a temperature-controlled inversion of the effect, where the entropy increases on switching the…

Mesoscale and Nanoscale Physics · Physics 2021-09-17 D. M. Polishchuk , M. Persson , M. M. Kulyk , E. Holmgren , G. Pasquale , A. Ullah , R. Skomski , V. Korenivski
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