Adiabatic calorimetric study of the intense magnetocaloric effect and the heat capacity of (La0.4Eu0.6)0.7Pb0.3MnO3

Карташев, А. В.; Flerov, I. N.; Волков, Н. В.; Sablina, K. A.

doi:10.1134/s1063783408110188

Cited by 40 publications

(27 citation statements)

References 8 publications

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“…In the middle temperature range (100-370 K), calorimetric studies were carried out by means of a homemade adiabatic calorimeter with three screens described in [10]. The sample with the mass of 35.24 mg was put into a heater consisting of an aluminum foil container with constantan wire cemented to its surface.…”

Section: Methodsmentioning

confidence: 99%

Phase transitions in fluoride KFe 2 F 6 with tetragonal tungsten bronze structure

Горев

Flerov

Tressaud

et al. 2014

Journal of Fluorine Chemistry

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Section: Methodsmentioning

confidence: 99%

Phase transitions in fluoride KFe 2 F 6 with tetragonal tungsten bronze structure

Горев

Flerov

Tressaud

et al. 2014

Journal of Fluorine Chemistry

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“…Specific heat was measured using an original adiabatic calorimeter with three screens at temperatures from ~64 K (slightly below the nitrogen melting point) to ~320 K [14]. At low temperatures (down to 2 K), the measurements were performed ona PPMS facility (Quantum Design).…”

Section: Methodsmentioning

confidence: 99%

Magnetic structure of Cu₂MnBO₅ ludwigite: thermodynamic, magnetic properties and neutron diffraction study

Moshkina¹,

Ritter²,

Еремин³

et al. 2017

J. Phys.: Condens. Matter

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Abstract-We report on the thermodynamic, magnetic properties and the magnetic structure of ludwigite-type Cu 2 MnBO 5 . The specific heat, the low-field magnetization and the paramagnetic susceptibility were studied on a single crystal and combined with powder neutron diffraction data. The temperature dependence of the specific heat and the neutron diffraction pattern reveal a single magnetic phase transition at T=92 K, which corresponds to the magnetic ordering into a ferromagnetic phase. The cation distribution and the values and directions of magnetic moments of ions in different crystallographic sites are established. The magnetic moments of Cu 2+ and Mn 3+ ions occupying different magnetic sites in the ferrimagnetic phase are pairwise antiparallel and their directions do not coincide with the directions of the principal crystallographic axes.The small value of the magnetic moment of copper ions occupying site 2a is indicative of partial disordering of the magnetic moments on this site. The magnetization measurements show a strong temperature hysteresis of magnetization, which evidences for field-dependent transitions below the phase transition temperature.

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“…Исследование теплоёмкости C p (T ) композитов и ке-рамического TGS в широком интервале температур и вблизи фазового перехода выполнено на автоматизи-рованном адиабатическом калориметре, использованном нами при изучении композитов NH 4 HSO 4 -стекло [18] и описанного в [22]. Эксперименты проводились в высоком вакууме 10 −6 mm Hg в режимах дискретных (с ша-гом 1−3 K) и непрерывных (dT /dt ≈ 0.15−0.30 K/min) нагревов.…”

Section: образцы и методы исследованияunclassified

Теплоемкость И Тепловое Расширение Нанокомпозитов Триглицинсульфат-Пористое Стекло

Михалева¹,

Флёров²,

Карташев³

et al. 2018

Физика Твердого Тела

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The effect of restricted geometry on specific heat capacity and thermal expansion of the triglycine sulfate (TGS)–borosilicate glass composites have been studied first. A decrease in the entropy and temperature of the P 2_1 ↔ P 2_1/ m phase transition in the TGS component with decreasing the glass matrix pore diameter at the invariable specific heat and thermal expansion coefficient has been observed. The estimates are indicative of the minor effect of internal pressure on the TGS pressure coefficient dT _ C / dp in the composites.

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Adiabatic calorimetric study of the intense magnetocaloric effect and the heat capacity of (La0.4Eu0.6)0.7Pb0.3MnO3

Cited by 40 publications

References 8 publications

Phase transitions in fluoride KFe 2 F 6 with tetragonal tungsten bronze structure

Phase transitions in fluoride KFe 2 F 6 with tetragonal tungsten bronze structure

Magnetic structure of Cu₂MnBO₅ ludwigite: thermodynamic, magnetic properties and neutron diffraction study

Теплоемкость И Тепловое Расширение Нанокомпозитов Триглицинсульфат-Пористое Стекло

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Adiabatic calorimetric study of the intense magnetocaloric effect and the heat capacity of (La0.4Eu0.6)0.7Pb0.3MnO3

Cited by 40 publications

References 8 publications

Phase transitions in fluoride KFe 2 F 6 with tetragonal tungsten bronze structure

Phase transitions in fluoride KFe 2 F 6 with tetragonal tungsten bronze structure

Magnetic structure of Cu2MnBO5 ludwigite: thermodynamic, magnetic properties and neutron diffraction study

Теплоемкость И Тепловое Расширение Нанокомпозитов Триглицинсульфат-Пористое Стекло

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Magnetic structure of Cu₂MnBO₅ ludwigite: thermodynamic, magnetic properties and neutron diffraction study