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Gadolinium stand as the favored choice among magnetic refrigerant materials for numerous active magnetic regenerator (AMR) prototypes due to its remarkable ability to exhibit a substantial change in magnetic entropy. This unique…

材料科学 · 物理学 2024-02-16 A. Endichi , H. Bouhani , O. Baggari , H. Zaari , O. Mounkachi , A. El Kenz , A. Benyoussef

A comprehensive experimental and theoretical study of the low temperature properties of GdCoIn$_5$ was performed. Specific heat, thermal expansion, magnetization and electrical resistivity were measured in good quality single crystals down…

Here we report magneto-thermal properties of Gd3Ir compounds using magnetic and heat capacity data. We observed large isothermal entropy change, adiabatic temperature change and relative cooling power are 4.1J/Kg, 4K and 437J/Kg on 50KOe…

材料科学 · 物理学 2015-01-30 Pramod Kumar , Rachana Kumar

Magnetic properties, heat capacity and magnetoresistance (MR) of polycrystalline GdRhGe are investigated. It shows two antiferromagnetic transitions, one at T1=31.8 K and the other at T2=24 K, and field induced metamagnetic transition over…

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

We report the response of electrical resistivity $\rho$ to the application of magnetic fields (H) up to 140 kOe in the temperature interval 1.8-300 K for the compound, Gd7Rh3, ordering antiferromagnetically below 150 K. We find that there…

强关联电子 · 物理学 2009-11-10 Kausik Sengupta , S. Rayaprol , E. V. Sampathkumaran

Magnetic and magnetocaloric properties of polycrystalline samples of Gd1-xSmxMn2Ge2 have been studied. All the compounds except GdMn2Ge2 show re-entrant ferromagnetic behavior. Multiple magnetic transitions observed in these compounds are…

材料科学 · 物理学 2009-11-13 Pramod Kumar , Niraj K. Singh , K. G. Suresh , A. K. Nigam , S. K. Malik

Polycrystalline samples of the RE$_{5}$Rh$_2$In$_4$ (RE = Gd--Tm) intermetallics have been investigated by means of X-ray diffraction (XRD) as well as by DC and AC magnetometric measurements. The XRD data confirm that the compounds…

材料科学 · 物理学 2025-05-22 Altifani Rizky Hayyu , Stanisław Baran , Aleksandra Deptuch , Andrzej Szytuła

We report the magnetocaloric effect in terms of isothermal magnetic entropy change as well as adiabatic temperature change, calculated using the heat capacity data. Using the zero field heat capacity data, the magnetic contribution to the…

材料科学 · 物理学 2009-11-11 Pramod Kumar , Niraj K. Singh , K. G. Suresh , A. K. Nigam , S. K. Malik

In an effort to understand the impact of nanostructuring on the magnetocaloric effect, we have grown and studied gadolinium in MgO/W(50 $\textrm{\AA}$)/[Gd(400 $\textrm{\AA}$)/W(50 $\textrm{\AA}$)]$_8$ heterostructures. The entropy change…

介观与纳米尺度物理 · 物理学 2011-12-19 Casey W. Miller , D. V. Williams , N. S. Bingham , H. Srikanth

We have studied the magnetic, magnetocaloric and magnetotransport properties of RSn1+xGe1-x(R=Gd, Tb, Er; x=0.1) series by means of magnetization, heat capacity and resistivity measurements. It has been found that all the compounds…

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

We have investigated magnetocaloric effect in double perovskite Gd2NiMnO6 (GNMO) and Gd2CoMnO6 (GCMO) samples by magnetic and heat capacity measurements. Ferromagnetic ordering is observed at ~130 K (~112 K) in GNMO (GCMO), while the Gd…

材料科学 · 物理学 2015-09-30 J. Krishna Murthy , K. Devi Chandrasekhar , Sudipta Mahana , D. Topwal , A. Venimadhav

The structural and magnetic properties of Ge0.5Mn0.5Co2O4 (GMCO) have been investigated in detail utilizing neutron powder diffraction (NPD), x-ray diffraction (XRD), DC magnetometry, and heat capacity analysis and compared with GeCo2O4.…

强关联电子 · 物理学 2024-07-02 Pooja Jain , Benny Schundelmier , Chin-Wei Wang , Poonam Yadav , Kaya Wei , N. P. Lalla , Shivani Sharma

The magnetocaloric effect of gadolinium formate, Gd(OOCH)3, is experimentally determined down to sub-Kelvin temperatures by direct and indirect methods. This 3D metal-organic framework material is characterized by a relatively compact…

We report the effect of exchange frustration on the magnetocaloric properties of GdCrTiO$_5$ compound. Due to the highly exchange-frustrated nature of magnetic interaction, in GdCrTiO$_5$, the long-range antiferromagnetic ordering occurs at…

材料科学 · 物理学 2018-09-26 M. Das , S. Roy , N. Khan , P. Mandal

We report detailed thermal expansion and magnetostriction experiments on GdCoIn$_5$ and GdRhIn$_5$ single crystal samples that show a sudden change in the dilation at a field B$^\ast$ for temperatures below the N\'eel transition temperature…

We report temperature (T) dependence of dc magnetization, electrical resistivity (rho(T)), and heat-capacity of rare-earth (R) compounds, Gd3RuSn6 and Tb3RuSn6, which are found to crystallize in the Yb3CoSn6-type orthorhombic structure…

强关联电子 · 物理学 2017-06-28 Sanjay K Upadhyay , Kartik K Iyer , E. V. Sampathkumaran

Using a combination of magnetometry and magnetotransport techniques, we studied temperature and magnetic field behavior of magnetization in Py/Gd heterostructures. It was shown quantitatively that proximity with Py enhances magnetic order…

介观与纳米尺度物理 · 物理学 2017-08-02 Pavel N. Lapa , Junjia Ding , John E. Pearson , Valentine Novosad , J. S. Jiang , Axel Hoffmann

A new ternary intermetallic compound $\mathrm{Pr_2Rh_2Ga}$ was synthesized by arc-melting and was characterized by powder X-ray diffraction (PXRD), magnetization, heat capacity $\mathrm{C}_p(\textit{T})$, and electrical resistivity…

材料科学 · 物理学 2021-03-10 Baidyanath Sahu

The magnetocaloric effect enables magnetic refrigeration and plays an important role for cooling at cryogenic temperatures, which is essential for emergent technologies such as hydrogen liquefaction and quantum computing. Here, we study the…

We have studied the effect of magnetic field on a non-stoichiometric Heusler alloy Ni$_{50}$Mn$_{35}$In$_{15}$ that undergoes a martensitic as well as a magnetic transition near room temperature. Temperature dependent magnetization…

材料科学 · 物理学 2009-11-13 P. A. Bhobe , K. R. Priolkar , A. K. Nigam
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