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Related papers: Magnetic cryocooling with Gd3+ centers in a light …

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The effects of Gd doping and O vacancies on the magnetic interaction and Curie temperature of EuO are studied using first-principles calculations. Linear response calculations in the virtual crystal approximation show a broad maximum in the…

Materials Science · Physics 2013-09-04 J. M. An , K. D. Belashchenko

Studies on the phenomenon of magnetoresistance (MR) have produced intriguing and application-oriented outcomes for decades--colossal MR, giant MR and recently discovered extremely large MR of millions of percents in semimetals can be taken…

Strongly Correlated Electrons · Physics 2017-02-28 Abhishek Pandey , Chandan Mazumdar , R. Ranganathan , D. C. Johnston

The magnetic and magnetocaloric properties of polycrystalline La0.70(Ca0.30-xSrx)MnO3:Ag 10% manganite have been investigated. All the compositions are crystallized in single phase orthorhombic Pbnm space group. Both, the Insulator-Metal…

Strongly Correlated Electrons · Physics 2015-06-05 R. Jha , Shiva Kumar Singh , Anuj Kumar , V. P. S. Awana

The ternary intermetallic compound Gd$_2$Cu$_2$In crystallizes in Mo$_2$Fe$_2$B type structure with the space group $P4/mbm$ and we study critical behaviour and magnetocaloric effect near the ferromagnetic transition ($T_C$ $\approx$ 94 K)…

Strongly Correlated Electrons · Physics 2017-11-28 Ramesh K. Kumar , Harikrishnan S. Nair , Baidyanath N. Sahu , Sindisiwe Xhakaza , Andre M. Strydom

The magnetocaloric effect (MCE) in the A-site ordered manganite NdBaMn2O6 is studied. The MCE in this compound has an anomalous behavior. In low magnetic fields, the abrupt transitions between direct and inverse magnetocaloric effect are…

Materials Science · Physics 2012-02-20 A. M. Aliev , A. G. Gamzatov , V. S. Kalitka , A. R. Kaul

Magnetization, magnetoresistance, and magnetodielectric measurements have been carried out on the half doped charge ordered manganite, Pr_0.5Ca_0.5MnO_3. The low temperature state is found to be strongly dependent on the oxygen…

Strongly Correlated Electrons · Physics 2009-04-29 A. Karmakar , S. Majumdar , A. K. Singh , S. Patnaik , S. Giri

At room temperature, GdMnO3 is a paraelectric and paramagnetic with a distorted perovskite structure of orthorhombic symmetry (space group Pnma). On cooling, it undergoes a phase transition sequence to a magnetic incommensurate phase…

Materials Science · Physics 2007-09-24 J. L. Ribeiro

Magnetocaloric effect in Mn4FeGe3-xSix compounds has been studied by dc magnetization measurements. For the parent compound Mn4FeGe3, the paramagnetic to ferromagnetic transition temperature TC is above room temperature (320 K), which…

Materials Science · Physics 2013-04-10 Madhumita Halder , S. M. Yusuf , A. K. Nigam

YMnO3 exhibits a ferroelectric transition at high temperature (~ 900 K) and magnetic ordering at T_N ~ 70 K where the dielectric constant shows an anomaly indicative of the magneto-dielectric effect. Here we report powder neutron…

Strongly Correlated Electrons · Physics 2007-05-23 M. Janoschek , B. Roessli , L. Keller , S. N. Gvasaliya , K. Conder , E. Pomjakushina

EuTiO_3, which is a G-type antiferromagnet below T_N = 5.5 K, has some fascinating properties at high temperatures, suggesting that macroscopically hidden dynamically fluctuating weak magnetism exists at high temperatures. This conjecture…

Materials Science · Physics 2014-09-04 Z. Guguchia , H. Keller , R. K. Kremer , J. Kohler , H. Luetkens , T. Goko , A. Amato , A. Bussmann-Holder

Ga2O3 thin films were deposited by reactive magnetron sputtering from a liquid gallium target. The influence of deposition temperature, substrate type, and discharge parameters on the structural and electrical properties was systematically…

Materials Science · Physics 2026-05-01 Petr Novak , Jan Koloros , Stanislav Haviar , Jiri Rezek , Pavel Baroch

Thermal switching materials, whose thermal conductivity can be controlled externally, show great potential in contemporary thermal management. Manipulating thermal transport properties through magnetic fields has been accomplished in…

GdCo$_5$ may be considered as two sublattices - one of Gd and one of Co - whose magnetizations are in antiparallel alignment, forming a ferrimagnet. Substitution of nickel in the cobalt sublattice of GdCo$_5$ has been investigated to gain…

Heat capacity of polycrystalline R2Ti3Ge4 (R = Gd, Tb and Er) compounds (Orthorhombic, Sm5Ge4-type, Space group Pnma) has been studied in the temperature range of 1.8 K to 300 K in various applied magnetic fields. The compounds with…

Materials Science · Physics 2009-11-13 R. Nirmala , Darshan C. Kundaliya , A. V. Morozkin , S. K. Malik

A quasi one-dimensional compound, Ca3CuRuO6, has been synthesized by solid-state reaction method and studied using magnetization (M) and heat capacity (C) measurements. This compound undergoes magnetic ordering (T_o) around 40 K, as…

Strongly Correlated Electrons · Physics 2016-08-31 S. Rayaprol , E. V. Sampathkumaran

We elaborate here why the antiferromagnetically ordered GdCrO$_3$ responds in a diamagnetic way under certain conditions, by monitoring the evolution of the microscopic global and local magnetic phases. Using high energy $\sim$ 0.3 eV…

Materials Science · Physics 2019-01-30 M. Tripathi , T. Chatterji , H. E. Fischer , R. Raghunathan , S. Majumder , R. J. Choudhary , D. M. Phase

We attempt to solve the magnetic structure of the gadolinium analogue of `spin-ice', using a mixture of experimental and theoretical assumptions. The eventual predictions are essentially consistent with both the Mossbauer and neutron…

Strongly Correlated Electrons · Physics 2015-05-19 M. I. Brammall , A. K. R. Briffa , M. W. Long

The mixed rare-earth orthochromite Nd$_{0.5}$Dy$_{0.5}$CrO$_{3}$ has a N\'eel temperature ($T_\mathrm{{N}}$) of ${\sim}$ 175\,K, resulting in the G-type antiferromagnetic ordering of Cr$^{3+}$ spins. The inverse susceptibility shows a…

Giant magnetocaloric (GMC) materials constitute a requirement for near room temperature magnetic refrigeration. (Fe,Mn)$_2$(P,Si) is a GMC compound with strong magnetoelastic coupling. The main hindrance towards application of this material…

The results of magnetoresistance ($\Delta \rho /\rho$)measurements in GdNi, in the temperature range 4.2 to 300 K are reported. The sign of $\Delta \rho /\rho $ above the Curie temperature (Tc= 70 K) is negative and its magnitude in a…

Strongly Correlated Electrons · Physics 2007-05-23 R. Mallik , E. V. Sampathkumaran , P. L. Paulose , V. Nagarajan
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