Results 271 to 280 of about 28,460 (303)

New DyHoCo medium entropy amorphous microwires of large magnetic entropy change

Journal of Alloys and Compounds, 2020
Abstract We report upon the excellent magnetocaloric effect in melt-extracted DyHoCo medium entropy microwires. The magnetic entropy change (-ΔSM) reaches a large value of ∼11.2 J kg−1 K−1 for a field change (μ0ΔH) of 5 T. The large value of -ΔSM is resulted from the large magnetic moments of Dy and Ho.
Hongxian Shen, Lin Luo, Ying Bao, Hangboce Yin, Sida Jiang, Lunyong Zhang, Yongjiang Huang, Shujuan Feng, Dawei Xing, Jingshun Liu, Ze Li, Yanfen Liu, Jianfei Sun, Manh-Huong Phan   +13 more
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More accurate calculations of the magnetic entropy changes

Journal of Magnetism and Magnetic Materials, 2009
Abstract A series of Ni 44− x Co x Mn 45 Sn 11 ( x =0, 1, 2) alloys were prepared by means of arc melting, magnetization curves under different temperatures were measured using vibrating sample magnetometer. The bicubic interpolations method was employed to calculate the magnetization M ( T , H ), and the magnetic entropy changes were figured
Haishun Liu, Xiexing Miao, Peng Wang, Min Yang, Wankui Bu, Duanming Li, Youwei Du   +6 more
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Magnetic entropy change in La0.75Ca0.25−xSrxMnO3 perovskites

Solid State Communications, 1998
Abstract Magnetic entropy change has been studied in a series of polycrystalline samples of La 0.75 Ca 0.25− x Sr x MnO 3 with fixed carrier concentration and gradual change in the average ionic radius of the La site 〈 r A 〉. In a fixed crystal structure with orthorhombic or rhombohedral phase, we found that the magnetic entropy change ...
Z.B. Guo, W. Yang, Y.T. Shen, Y.W. Du
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Making the most of the magnetic and lattice entropy changes

Journal of Magnetism and Magnetic Materials, 2009
Abstract Recent discoveries of novel materials exhibiting a magnetocaloric effect that is strongly enhanced by the magnetoelastic coupling—the so-called giant magnetocaloric effect materials—stimulated an unprecedented expansion of research related both to the fundamentals of the phenomenon and potential future applications of these materials in ...
V.K. Pecharsky, K.A. Gschneidner, Ya. Mudryk, Durga Paudyal   +3 more
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Anisotropic magnetoresistivity and magnetic entropy change in HoAl2

Intermetallics, 2016
Abstract We report a correlation between magnetoresistivity Δρ mag and magnetic entropy change ΔS mag for specified crystallographic directions of a HoAl 2 single crystal. This ferromagnetic compound shows differentiated behavior among the members of the RAl 2 series due to the presence of spontaneous spin reorientation.
M.V. de Souza, E.J.R. Plaza, J.C.P. Campoy   +2 more
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Large magnetic entropy change in La0.67−xGdxCa0.33Mno3

Journal of Magnetism and Magnetic Materials, 1997
Abstract A magnetic entropy change larger than that of gadolinium has been observed in perovskite manganites La 0.67− x Gd x Ca 0.33 MnO 3 ( x = 0, 0.05, 0.1, and 0.15) with fixed carrier concentration. The large magnetic entropy change produced by the abrupt reduction of magnetization is attributed to an anomalous thermal expansion at the Curie
H. Huang, Z.B. Guo, D.H. Wang, Y.W. Du
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Accessibility investigation of large magnetic entropy change in CoMn1−xFexGe

Journal of Applied Physics, 2016
The influence of Fe doping for Mn in CoMn1−xFexGe alloys on their structural and magnetic phase transitions was investigated. CoMn1−xFexGe alloys display a first-order magneto-structural transition from a high temperature paramagnetic hexagonal Ni2In-type crystal structure to a low temperature ferromagnetic orthorhombic TiNiSi-type structure.
S. Yuce, N. M. Bruno, B. Emre, I. Karaman   +3 more
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Study of magnetic transition and magnetic entropy changes of Pr0.6Sr0.4MnO3 and Pr0.6Sr0.4Mn0.9Fe0.1O3 compounds

The European Physical Journal Plus, 2016
In the present work, we analyze the magnetic transition and magnetic entropy change $ \vert\Delta S_{M}\vert$ of Pr0.6Sr0.4Mn1-x Fe x O3 samples.
Nasri, Abir, Hlil, E.K., Lehlooh, A.F., Ellouze, M., Elhalouani, F.   +4 more
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Magnetic properties and magnetic entropy change of amorphous and crystalline GdNiAl ribbons

Applied Physics A: Materials Science & Processing, 2002
The structure and magnetic properties of amorphous melt-spun and subsequently crystallized GdNiAl ribbons were investigated. An amorphous phase was formed after the quenching process by melt spinning with a copper wheel having a surface speed of 30 m/s.
Si, L., Ding, J., Li, Y., Yao, B., Tan, H.   +4 more
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Effects of carbon on magnetic properties and magnetic entropy change of the LaFe11.5Si1.5 compound

Journal of Applied Physics, 2003
Effects of the interstitial carbon atoms on the magnetic properties, especially on the magnetic entropy change, of the LaFe11.5Si1.5 compound, have been studied. X-ray diffraction patterns reveal a monotonous increase of the lattice constant with the concentration of carbon, while the cubic NaZn13-type structure remains unchanged.
Yuan-fu Chen, Fang Wang, Bao-gen Shen, Ji-rong Sun, Guang-jun Wang, Feng-xia Hu, Zhao-hua Cheng, Tao Zhu   +7 more
openaire   +1 more source