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Despite extensive researches on manganites owing to widespread use in modern electronics, this class of metal oxides does not cease to surprise with its unique properties and new phenomena. Here we have studied structural and magnetic…

The effect of pressure on the magnetic and the magnetocaloric properties around the martensitic transformation temperature in NiCoMnSb Heusler alloy has been studied. The martensitic transition temperature has significantly shifted to…

强关联电子 · 物理学 2010-06-02 Ajaya K. Nayak , K. G. Suresh , A. K. Nigam , A. A. Coelho , S. Gama

The van der Waals ferromagnet Fe5GeTe2 has a Curie temperature TC of about 270 K, which can be raised above room temperature by tuning the Fe deficiency content. To achieve insights into its ferromagnetic exchange, we have studied the…

强关联电子 · 物理学 2021-02-17 Zhengxian Li , Wei Xia , Hao Su , Zhenhai Yu , Yunpeng Fu , Leiming Chen , Xia Wang , Na Yu , Zhiqiang Zou , Yanfeng Guo

The tetragonal layered compounds TbTiGe and ErTiGe order antiferromagnetically at 276 K and 39 K, respectively. Partial substitution of Mo for Ti in these two compounds modifies the magnetic interactions giving rise to a ferromagnetic…

材料科学 · 物理学 2007-08-30 R. Nirmala , S. K. Malik

La-Fe-Si-based alloys are among the most application-ready magnetocaloric materials for room-temperature magnetic refrigeration. Powder metallurgy methods have been previously demonstrated to successfully produce structures with sub-mm…

A study investigating the effect of Sn substitution on the magnetocaloric properties of Mn$ _{3} $Ga$ _{(1-x)} $Sn$ _{x} $C compounds reveals that nature of the MCE has a strong dependence on the nature of the magnetic ordering. For small…

材料科学 · 物理学 2015-06-30 E. T. Dias , K. R. Priolkar , O. Cakir , M. Acet , A. K. Nigam

The magnetic and magnetocaloric (MCE) properties were studied in a stuffed honeycomb antiferromagnet GdInO3 polycrystalline. No long-range magnetic ordering was observed with only a sharp upturn in the temperature dependent magnetization…

强关联电子 · 物理学 2021-12-13 Yao-Dong Wu , Wei-Wei Duan , Qiu-Yue Li , Yong-Liang Qin , Zhen-Fa Zi , Jin Tang

Magnetocaloric effect (MCE), magnetization, specific heat, and magnetostriction measurements were performed in both pulsed and steady high magnetic fields to investigate the magnetocaloric properties of Heusler alloys Ni50-xCoxMn31.5Ga18.5…

材料科学 · 物理学 2021-03-24 T. Kihara , T. Roy , X. Xu , A. Miyake , M. Tsujikawa , H. Mitamura , M. Tokunaga , Y. Adachi , T. Eto , T. Kanomata

The magnetism in Mn$_3$Si$_2$Te$_6$ has been investigated using thermodynamic measurements, first principles calculations, neutron diffraction and diffuse neutron scattering on single crystals. These data confirm that Mn$_3$Si$_2$Te$_6$ is…

We have studied the magnetocaloric effect (MCE) in the shape-memory Heusler alloy Ni$_{50}$Mn$_{35}$In$_{15}$ by direct measurements in pulsed magnetic fields up to 6 and 20 T. The results in 6 T are compared with data obtained from…

The rotating magnetocaloric effect (RMCE) induced by self-demagnetization has been investigated in the giant magnetocaloric effect (GMCE) material Gd$_5$Si$_2$Ge$_2$. This shape-dependent effect had thus far only been reported in pure Gd,…

Magnetoresistance and magnetocaloric properties of polycrystalline HoRhGe have been studied. This compound orders antiferromagnetically with a Neel temperature (TN) of 5.5 K and undergoes a first order metamagnetic transition at 2 K. It…

强关联电子 · 物理学 2019-09-19 Sachin B. Gupta , K. G. Suresh , A. K. Nigam

We report a large entropy change (DeltaS) below 300 K, peaking near TC= 220 K, due to isothermal change of magnetic field, for Gd4Co3, with a refrigeration capacity higher than that of Gd. Notably, the isothermal magnetization is…

强关联电子 · 物理学 2008-06-12 Niharika Mohapatra , Kartik K Iyer , E. V. Sampathkumaran

Magnetocaloric performance of the RE$_{5}$Pd$_2$In$_4$ (RE = Tb-Tm) rare earth compounds has been investigated using measurements of magnetization in the function of temperature and applied magnetic field. The maximum magnetic entropy…

材料科学 · 物理学 2024-02-29 Altifani Rizky Hayyu , Stanisław Baran , Andrzej Szytuła

We report the magnetic, thermal, magnetocaloric and transport properties of polycrystalline NdCuSi. The compound shows a weak antiferromagnetic ordering, as confirmed by different measurements. Arrott plots indicate that the magnetic phase…

强关联电子 · 物理学 2019-09-19 Sachin Gupta , K. G. Suresh1 , A. K. Nigam

In this paper the structural, magnetic, and dielectric properties of langasite compound Pb$_3$TeMn$_3$P$_2$O$_{14}$ have been investigated as a candidate of short-range magnetic correlations driven development of dielectric anomaly above…

材料科学 · 物理学 2021-07-01 Rafikul Ali Saha , Desheng Fu , Mitsuru Itoh , Sugata Ray

We report proof-of-concept measurements of the magnetocaloric effect (MCE) in ultrahigh magnetic fields up to 120 T for the classical spin-ice compound Ho$_{2}$Ti$_{2}$O$_{7}$. Radio-frequency resistivity measurements using an…

强关联电子 · 物理学 2026-03-10 Reon Ogawa , Masaki Gen , Kazuyuki Matsuhira , Yoshimitsu Kohama

At certain compositions Ni-Mn-$X$ Heusler alloys ($X$: group IIIA-VA elements) undergo martensitic transformations, and many of them exhibit inverse magnetocaloric effects. In alloys where $X$ is Sn, the isothermal entropy change is largest…

材料科学 · 物理学 2009-11-13 Thorsten Krenke , Eyup Duman , Mehmet Acet , Xavier Moya , Lluis Manosa , Antoni Planes

A detailed study of the magnetic and magnetocaloric properties of a garnet compound Mn$_{3}$Cr$_{2}$Ge$_{3}$O$_{12}$ is carried out using x-ray diffraction, magnetization, heat capacity, and neutron diffraction measurements as well as…

强关联电子 · 物理学 2024-03-14 S. Mohanty , A. Magar , Vikram Singh , S. S. Islam , S. Guchhait , A. Jain , S. M. Yusuf , A. A. Tsirlin , R. Nath

Ferromagnetic solids acquire nontrivial magnetic and caloric properties when the temperature of the structural phase transition approaches the Curie point. Deciphering magneto-structural transitions, i.e. determining their characteristic…