Low field magnetocaloric effect in the double perovskite Sr 2 CrMoO 6 : Monte Carlo simulation

Rhazouani, O. El; Slassi, Amine

doi:10.1016/j.cocom.2017.05.002

Cited by 20 publications

(3 citation statements)

References 34 publications

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“…The influence of the crystal field and external magnetic field on the variation of the peak value of isothermal entropy change was discussed emphatically. Apart from the research mentioned above, there are many other investigations on the MCE of thin films, for instance AlCMn 3 [36], NdMnO 3 [37], Ho 3 Pd 2 [38], Sr 2 CrMoO 6 [39], Sr 2 CrIrO 6 [40], and SmFe 1−x Mn x O 3 [41]. All these studies reveal that exchange coupling and an applied external field play a significant role in the variation of the MCE, and this is exactly what our present research focuses on.…”

Section: Introductionmentioning

confidence: 99%

Monte Carlo study of the magnetic properties and magnetocaloric effect of an AFM/FM BiFeO₃/Co bilayer

Chang¹,

Wang²,

Ma³

et al. 2021

Commun. Theor. Phys.

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The magnetic properties and magnetocaloric effect of an antiferromagnetic/ferromagnetic (AFM/FM) BiFeO3/Co bilayer with mixed-spin (5/2, 3/2) have been studied based on Monte Carlo simulation. The magnetization, susceptibility, and critical temperature are investigated under various exchange couplings and an external magnetic field. In particular, the influence of exchange couplings and an external magnetic field on the magnetic entropy change, adiabatic temperature change, and the relative cooling power (RCP) are studied. The simulation results indicated that the decrease of the exchange coupling and the increase of external magnetic fields can cause an increase of magnetic entropy change, adiabatic temperature change, and RCP. In addition, the hysteresis loops of the system are presented for different exchange couplings and temperatures.

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Section: Introductionmentioning

confidence: 99%

Monte Carlo study of the magnetic properties and magnetocaloric effect of an AFM/FM BiFeO₃/Co bilayer

Chang¹,

Wang²,

Ma³

et al. 2021

Commun. Theor. Phys.

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“…Despite its simplicity, the mixed spin Ising model can also still provide a good simulation of many complex structures, such as DP materials [19]. Moreover, magnetic properties of the DPs have been studied on La 2 NiMnO 6 [20], Sr 2 CrOsO 6 [21], Sr 2 CrMoO 6 [22], Sr 2 CrIrO 6 [23], Sr 2 RuHoO 6 [24], Sr 2 CrReO 6 [25], Sr 2 TiMoO 6 [26], Ba 2 CrMoO 6 [27], Ba 2 NiUO 6 [28] by using MC simulation. The magnetic properties of the DPs have also been studied on Sr 2 RuHoO 6 [24], Sr 2 CrReO 6 [25], Ba 2 CrMoO 6 [27], Ba 2 NiUO 6 [28] by using MFA and on Sr 2 TiMoO 6 [26] by using density function theory.…”

Section: Introductionmentioning

confidence: 99%

Nonequilibrium magnetic properties of the Sr₂FeMoO₆ type double perovskite structure

Deviren

2021

J. Phys.: Condens. Matter

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The Glauber-type stochastic dynamic interpreted by the mean-field theory has been applied to investigate the dynamic magnetic properties of the Sr2FeMoO6 type double perovskite structure under the time varying magnetic field. First, we used the Glauber dynamics to obtain the dynamic mean-field equations. The time varying average Fe and Mo magnetizations are examined to find the phase region of the system. The dynamic Fe and Mo magnetizations, hysteresis loop areas and correlations are calculated depending on the temperature in order to determine the nature of the first and second order phase transitions, as well as to get the dynamic transition points for different ratio of the system parameters. The dynamic phase diagrams (DPDs) are constructed in the plane of reduced temperature and external magnetic field amplitude (T, h). The DPDs contain paramagnetic (p), ferromagnetic (f), ferrimagnetic-1 (i1), ferrimagnetic-2 (i2) phases and six mixed regions, (f + p), (f + i1), (f + i2), (i1 + p), (i2 + p) and (i1 + i2). The DPDs also exhibit dynamic tricritical points and reentrant phenomena, which strongly depend on interaction parameters.

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“…Numerous structure types and extensively useful properties have been widely investigated by using different elements on A, B or B´ sites. Double perovskites materials are exploited in a variety of physical properties such as half metallic [1], optoelectronic [2,3] magnetocaloric [4,5], antiferromagnetic [6], ferromagnetic [7], making their widely used in spintronic and optoelectronic devices [8,9]. In addition, double perovskites have been attracted attentions for thermoelectric performance due to good durability and low synthesis cost [10][11][12][13].…”

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confidence: 99%

Promising electronic structure of double perovskite Sr₂TiMoO₆: Spin-polarized DFT+U approach

Hui

Fan

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract:The electronic structure of double perovskite Sr 2 TiMoO 6 have been systematically investigated using first principle. The spin-polarized electronic band structure and the density of states reveal that the spin-up channel has metal behavior while the spin-down channel expresses semiconductor behavior with direct band gap of 2.92 eV. For valence band, the O-2p states is the mainly contributor for both spin-up and spin-down channels above -5.3eV. Between -7.7eV to -5.3eV, valence band is formed by O-2p states with admixture of Mo-4d states. For conduction band, from range 4 eV to 7.4 eV is mostly formed by Sr-3d. On the other hand, O-2p, Mo-4d as well as Ti-3d states mainly consists of the conduction band near Fermi energy, so those states need to be more concerned. The spin splitting may lead to unusual thermoelectric transport properties. IntroductionDouble perovskites A 2 BBÓ 6 (where A respects alkali earth metal or rare-earth element, B and B' are transition elements with electronic configuration in d-orbital) has double unit cell of normal perovskite. Numerous structure types and extensively useful properties have been widely investigated by using different elements on A, B or B´ sites. Double perovskites materials are exploited in a variety of physical properties such as half metallic [1], optoelectronic [2,3] magnetocaloric [4,5], antiferromagnetic [6], ferromagnetic [7], making their widely used in spintronic and optoelectronic devices [8,9]. In addition, double perovskites have been attracted attentions for thermoelectric performance due to good durability and low synthesis cost [10][11][12][13]. Because of high electronic conductivity and low thermal conductivity, double perovskite Sr 2 TiMoO 6 exhibits as promising thermoelectric material [14,15]. The absence of the electronic structure of double perovskite Sr 2 TiMoO 6 makes it is necessary to predict theoretically. We systematically studied the electronic structure of double perovskite Sr 2 TiMoO 6 based on the framework of density functional theory (DFT). The computational methods and details are presented as follows.

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Low field magnetocaloric effect in the double perovskite Sr 2 CrMoO 6 : Monte Carlo simulation

Cited by 20 publications

References 34 publications

Monte Carlo study of the magnetic properties and magnetocaloric effect of an AFM/FM BiFeO₃/Co bilayer

Monte Carlo study of the magnetic properties and magnetocaloric effect of an AFM/FM BiFeO₃/Co bilayer

Nonequilibrium magnetic properties of the Sr₂FeMoO₆ type double perovskite structure

Promising electronic structure of double perovskite Sr₂TiMoO₆: Spin-polarized DFT+U approach

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Low field magnetocaloric effect in the double perovskite Sr 2 CrMoO 6 : Monte Carlo simulation

Cited by 20 publications

References 34 publications

Monte Carlo study of the magnetic properties and magnetocaloric effect of an AFM/FM BiFeO3/Co bilayer

Monte Carlo study of the magnetic properties and magnetocaloric effect of an AFM/FM BiFeO3/Co bilayer

Nonequilibrium magnetic properties of the Sr2FeMoO6 type double perovskite structure

Promising electronic structure of double perovskite Sr2TiMoO6: Spin-polarized DFT+U approach

Contact Info

Product

Resources

About

Monte Carlo study of the magnetic properties and magnetocaloric effect of an AFM/FM BiFeO₃/Co bilayer

Monte Carlo study of the magnetic properties and magnetocaloric effect of an AFM/FM BiFeO₃/Co bilayer

Nonequilibrium magnetic properties of the Sr₂FeMoO₆ type double perovskite structure

Promising electronic structure of double perovskite Sr₂TiMoO₆: Spin-polarized DFT+U approach