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相关论文: Tuning magnetostructural phase transition in CoMn$…

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Polycrystalline samples of Co$_{1-x}$Cu$_x$MnGe ($x=0.05, 0.10, 0.15, 0.22$ and 0.35), prepared by arc melting under argon atmosphere, have been annealed at 1123 K with final furnace cooling. The samples have been investigated by powder…

The hydrostatic pressure is expected to be an effective knob to tune the magnetostructural phase transitions of hexagonal MMX alloy. In this study, magnetization measurements under hydrostatic pressure were performed on a MMX martensitic…

材料科学 · 物理学 2021-06-08 Qingqi Zeng , Jianlei Shen , Enke Liu , Xuekui Xi , Wenhong Wang , Guangheng Wu , Xixiang Zhang

Magnetic properties of a polycrystalline alloy Ni$_{2.19}$Mn$_{0.81}$Ga, which undergoes a first-order magnetostructural phase transition from cubic paramagnetic to tetragonal ferromagnetic phase, are studied. Hysteretic behavior of…

The crystal structure and magnetic properties of MnCoxFe1-xSi (x=0-0.5) compounds were investigated. With increasing Fe content, the unit cell changes anisotropically and the magnetic property evolves gradually: Curie temperature decreases…

The structural transitions, magnetic properties, and electronic structures of Co(Fe)-doped MnNiSi compounds are investigated by x-ray powder diffraction (XRD), differential scanning calorimetry (DSC), magnetic measurements, and…

材料科学 · 物理学 2015-04-17 Y. Li , Z. Y. Wei , E. K. Liu , G. D. Liu , S. G. Wang , W. H. Wang , G. H. Wu

Co10Ge3O16 crystallizes in an intergrowth structure featuring alternating layers of spinel and rock salt. Variable-temperature powder synchrotron X-ray and neutron diffraction, magnetometry, and heat capacity experiments reveal a…

材料科学 · 物理学 2013-07-12 Phillip T. Barton , Ram Seshadri , Anna Llobet , Matthew R. Suchomel

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…

The first order magneto-structural transition ($T_t\simeq95$ K) and magnetocaloric effect in MnNiGe$_{0.9}$Ga$_{0.1}$ are studied via powder x-ray diffraction and magnetization measurements. Temperature dependent x-ray diffraction…

材料科学 · 物理学 2018-01-17 Pallab Bag , R. Nath

Structural phase transitions in $f$-electron materials have attracted sustained attention both for practical and basic science reasons, including that they offer an environment to directly investigate relationships between structure and the…

强关联电子 · 物理学 2020-08-05 Y. Lai , K. Wei , G. Chappell , J. Diaz , T. Siegrist , P. J. W. Moll , D. Graf , R. E. Baumbach

We have investigated structural and magnetic phase transitions under high pressures in a quaternary rare earth transition metal arsenide oxide NdCoAsO compound that is isostructural to high temperature superconductor NdFeAsO. Four-probe…

At 300 K, Y$_{0.9}$Gd$_{0.1}$Fe$_{2}$H$_{x}$ hydrides crystallize sequentially with increasing H concentration in various structures related to a lowering of the cubic MgCu$_{2}$ type structure of the parent alloy: cubic C1, monoclinic M1,…

材料科学 · 物理学 2022-10-06 V. Paul-Boncour , K. Provost , T. Mazet , A. N Diaye , E. Alleno , F. Couturas

We report structural and physical properties of the single crystalline ${\mathrm{Ca}}{\mathrm{Mn}}_{2}{\mathrm{P}}_{2}$. The X-ray diffraction(XRD) results show that ${\mathrm{Ca}}{\mathrm{Mn}}_{2}{\mathrm{P}}_{2}$ adopts the trigonal…

材料科学 · 物理学 2021-01-08 Y. J. Li , F. Jin , Z. Y. Mi , J. Guo , W. Wu , D. S. Wu , S. H. Na , C. Mu , X. B. Zhou , Z. Li , K. Liu , L. L. Sun , Q. M. Zhang , T. Xiang , G. Li , J. L. Luo

Ni-Mn-In magnetic shape-memory Heusler alloys exhibit generally a large thermal hysteresis at their first-order martensitic phase transition which hinder a technological application in magnetic refrigeration. By optimizing the Cu content in…

材料科学 · 物理学 2020-04-16 P. Devi , C. Salazar Mejia , L. Caron , Sanjay Singh , M. Nicklas , C. Felser

A magneto-structural phase transition is investigated in single crystal CrN thin films grown by rf plasma molecular beam epitaxy on MgO(001) substrates. While still within the vacuum environment following MBE growth, $\it in-situ$…

We investigate the effect of hydrostatic pressure on temperature dependence of magnetization and also the influence of magnetic field on linear thermal expansion in polycrystalline Pr0.6Sr0.4MnO3, which is ferromagnetic at room temperature…

材料科学 · 物理学 2018-08-15 Amit Chanda , R. Mahendiran

A remarkable decrease of the structural transition temperature of MnNiSi from 1200 K to <300 K by chemically alloying it with MnFeGe results in a coupling of the magnetic and structural transitions, leading to a large magnetocaloric effect…

(Mn,Fe)2(P,Si) single crystals have been successfully grown by flux method. Single crystal diffraction demonstrates that Mn0.83Fe1.17P0.72Si0.28 crystallizes in a hexagonal crystal structure (space group P-62m) at both 100 and 280 K, in the…

材料科学 · 物理学 2015-08-03 H. Yibole , F. Guillou , Y. K. Huang , G. R. Blake , A. J. E. Lefering , N. H. van Dijk , E. Brück

The crystal structures, martensitic structural transitions and magnetic properties of MnCo1-xFexSi (0 <= x <= 0.50) alloys were studied by differential scanning calorimetry (DSC), x-ray powder diffraction (XRD) and magnetic measurements. In…

材料科学 · 物理学 2015-04-17 J. H. Chen , Z. Y. Wei , E. K. Liu , X. Qi , W. H. Wang , G. H. Wu

We have investigated the structural, magnetic, thermodynamic, and charge transport properties of Mn1/3NbS2 single crystals through x-ray and neutron diffraction, magnetization, specific heat, magnetoresistance, and Hall effect measurements.…

The article addresses the possibility of alloy elements in MnBi which may modify the thermodynamic stability of the NiAs-type structure without significantly degrading the magnetic properties. The addition of small amounts of Rh and Mn…

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