Results 11 to 20 of about 8,638 (296)

High-efficiency magnetic refrigeration using holmium [PDF]

open access: yesNature Communications, 2021
AbstractMagnetic refrigeration (MR) is a method of cooling matter using a magnetic field. Traditionally, it has been studied for use in refrigeration near room temperature; however, recently MR research has also focused on a target temperature as low as 20 K for hydrogen liquefaction.
Noriki Terada, Hiroaki Mamiya
openaire   +3 more sources

An optimized magnet for magnetic refrigeration [PDF]

open access: yesJournal of Magnetism and Magnetic Materials, 2010
A magnet designed for use in a magnetic refrigeration device is presented. The magnet is designed by applying two general schemes for improving a magnet design to a concentric Halbach cylinder magnet design and dimensioning and segmenting this design in an optimum way followed by the construction of the actual magnet.
Bjørk, Rasmus   +4 more
openaire   +3 more sources

The Effect of a Multiphase Microstructure on the Inverse Magnetocaloric Effect in Ni–Mn–Cr–Sn Metamagnetic Heusler Alloys

open access: yesMagnetochemistry, 2017
Two Ni–Mn–Sn alloys substituted with 0.5 and 1 at.% Cr have been studied. The first alloy shows an average composition of Ni49.6Mn37.3Cr0.7Sn12.4 (e/a = 8.107), whereas the second has a multiphase microstructure with the matrix phase of an average Ni52 ...
Paweł Czaja   +4 more
doaj   +1 more source

Enhancing giant magnetocaloric effect near room temperature by inducing magnetostructural coupling in Cu-doped MnCoGe

open access: yesMaterials & Design, 2020
High performance magnetocaloric materials are crucial to realize the energy efficient and environment friendly magnetic cooling/refrigeration technology.
S.K. Pal   +5 more
doaj   +1 more source

Novel approach in fabricating microchannel-structured La(Fe,Si)13Hy magnetic refrigerant via low-contamination route using dissolutive mold

open access: yesMaterials & Design, 2022
Herein, as the fabrication of the microchannels for fluid flow using La(Fe,Si)13 magnetic refrigerant material is required while maintaining its superior magnetocaloric performance, sinter molding of the microchannel-designed La(Fe,Si)13 was investigated
Kaoru Imaizumi   +4 more
doaj   +1 more source

Magnetocaloric effect and critical behavior in Fe-La-Zr rapidly quenched ribbons

open access: yesJournal of Science: Advanced Materials and Devices, 2018
Fe90-xLaxZr10 (x = 1 and 2) rapidly quenched ribbons with thickness of about 15 μm were prepared by the melt-spinning method. X-ray diffraction analysis shows that the structure of the ribbons is mostly amorphous.
Kieu Xuan Hau   +11 more
doaj   +1 more source

MnAs and MnFeP1−xAsx-based magnetic refrigerants: a review

open access: yesMaterials Research Express, 2020
This paper presents a comparative analysis of MnAs and MnFeP _1− _x As _x family and its alloys from magnetic refrigeration perspective. A thorough literature review was undertaken and to the best of authors knowledge, all samples (∼100 samples) with ...
Ume e Habiba   +3 more
doaj   +1 more source

Surface-confined molecular coolers for cryogenics [PDF]

open access: yes, 2012
An excellent molecule-based cryogenic magnetic refrigerant, gadolinium acetate tetrahydrate, is here used to decorate selected portions of silicon substrate. By quantitative magnetic force microscopy for variable applied magnetic field near liquid-helium
Arauzo, Ana   +7 more
core   +2 more sources

Achievement of a table-like magnetocaloric effect in the dual-phase ErZn2/ErZn composite

open access: yesMaterials Research Letters, 2018
Dual-phase ErZn2/ErZn composite was obtained by induction-melting method. The composite crystallizes in the phases of ErZn2 and ErZn with the weight ratio of 53.8:46.2. The composite undergoes two successive magnetic phase transitions.
Lingwei Li   +4 more
doaj   +1 more source

Magnetocaloric Effect Caused by Paramagnetic Austenite–Ferromagnetic Martensite Phase Transformation [PDF]

open access: yes, 2018
In the present work, the magnetization of Ni50Mn17.5Ga25Cu7.5 alloy undergoing the first-order phase transition from paramagnetic austenite to ferromagnetic martensite was measured to evaluate the magnetic-field-induced entropy change (MFIEC) and ...
Cesari, Eduard   +4 more
core   +2 more sources

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