Magnetic properties and magnetocaloric effects in ferrimagnetic compounds

Burzo, E.; Balasz, I.; Deac, I. G.; Tetean, R.

doi:10.1016/j.jmmm.2009.09.014

Cited by 16 publications

(6 citation statements)

References 12 publications

(21 reference statements)

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“…The same picture of plateau-like ΔS(T) dependence has been observed in Ref. [9] for ErFe 2 .Besides, for the Er(Co 1-x Fe x ) 2 samples with x ≥ 0.40 the magnetization compensation point was found in Ref. [4] accompanied by the reversed MCE.…”

Section: Magnetocaloric Effectsupporting

confidence: 83%

Features of Magnetocaloric Effect in Er(Co-Fe)2 Laves Phases

Anikin¹,

Tarasov²,

Kudrevatykh³

et al. 2016

Kms

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In this work the results of measurements of heat capacity (C P ) and magnetocaloric effect (MCE) in Er(Co 1-x Fe x ) 2 system in the concentration range 0.07 ≤ x ≤ 0.80 are presented. Phase composition was controlled by X-ray difraction analysis. Heat capacity was measured in the temperature range 77-320 K. MCE has been studied within the temperature range 5-670 K in magnetic fields up to 70 kOe. It was found that Fe concentration increase caused the table-like (plateau) MCE temperature dependence for both magnetic entropy change date and direct ΔT-effect measurements independently on Fe concentration. The possible reasons of such behavior are discussed.

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Section: Magnetocaloric Effectsupporting

confidence: 83%

Features of Magnetocaloric Effect in Er(Co-Fe)2 Laves Phases

Anikin¹,

Tarasov²,

Kudrevatykh³

et al. 2016

Kms

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“…This phenomenon is both observed experimentally (e.g. [32][33][34]), for instance, in the following materials: MnBr4H 2 O, Yb 3 Fe 5 O 12 , Ni 50 Mn 34 In 16 , CoMnSi, Mn 1.82 V 0.18 Sb, and its existence has been qualitatively explained [35][36][37][38][39][40] and predicted for some classes of non-trivial magnets (like low-dimensional [41] and frustrated systems = J BB ⊥ , J BB z , respectively. The interplanar coupling is J AB z .…”

Section: Introductionmentioning

confidence: 53%

Normal and inverse magnetocaloric effect in magnetic multilayers with antiferromagnetic interlayer coupling

Szałowski

Balcerzak

2014

J. Phys.: Condens. Matter

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The thermodynamics of a spin-1/2 magnetic multilayer system with antiferromagnetic interplanar couplings is studied using the Pair Approximation method. The special attention is paid to magnetocaloric properties, quantified by isothermal entropy change. The multilayer consists of two kinds of magnetic planes, one of which is diluted. The intraplanar couplings in both planes have arbitrary anisotropy ranging between Ising and isotropic Heisenberg interactions. The phase diagram related to the occurrence of magnetic compensation phenomenon is constructed and discussed. Then the isothermal entropy change is discussed as a function of interaction parameters, magnetic component concentration and external magnetic field amplitude. The ranges of normal and inverse magnetocaloric effect are found and related to the presence or absence of compensation.

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“…Имеющиеся в литературе данные показывают, что на эксперименте для объемных ферримагнетиков изменение знака S M происходит в некотором интервале температур [3,4,14]. В качестве возможной причины этого, как правило, рассматриваются нарушение структурного порядка и связанная с ним флуктуация обменного взаимодействия или возникновение неколлинеарной магнитной структуры под воздействием внешнего магнитного поля [16,17]. В нашем случае вероятны оба сценария.…”

Section: полученные результатыunclassified

Магнитокалорический эффект в окрестности температуры магнитной компенсации аморфных ферримагнитных пленок Gd-Co

Свалов¹,

Архипов²,

Лепаловский³

et al. 2021

Физика Твердого Тела

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The magnetic and magnetocaloric properties of amorphous ferrimagnetic Gd-Co films with perpendicular magnetic anisotropy were studied in a wide range of fields and temperatures. The change in the sign of the magnetocaloric effect near the compensation temperature occurs almost abruptly when the magnetic field is oriented perpendicular to the film plane. In a certain temperature range, it happens when the field is oriented along the plane of the sample. The most probable reason for the blurring of this transition is the appearance of a non-collinear magnetic structure.

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Magnetic properties and magnetocaloric effects in ferrimagnetic compounds

Cited by 16 publications

References 12 publications

Features of Magnetocaloric Effect in Er(Co-Fe)2 Laves Phases

Features of Magnetocaloric Effect in Er(Co-Fe)2 Laves Phases

Normal and inverse magnetocaloric effect in magnetic multilayers with antiferromagnetic interlayer coupling

Магнитокалорический эффект в окрестности температуры магнитной компенсации аморфных ферримагнитных пленок Gd-Co

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