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Extended x-ray absorption fine-structure (EXAFS) measurements have been carried out on Ni$_{50}$Mn$_{35}$Sn$_{15}$ in the austenitic and martensitic phase. The temperatures associated with structural and magnetic phase transformations are…

Materials Science · Physics 2009-11-13 P. A. Bhobe , K. R. Priolkar , P. R. Sarode

We present temperature-, magnetic-field-, and pressure-dependent Raman scattering studies of single crystal Mn3O4, combined with temperature- and field-dependent x-ray diffraction studies, revealing the novel magnetostructural phases in…

Strongly Correlated Electrons · Physics 2015-05-28 M. Kim , X. M. Chen , X. Wang , C. S. Nelson , R. Budakian , P. Abbamonte , S. L. Cooper

The high-temperature ferromagnet MnBi continues to receive attention as a candidate to replace rare-earth-containing permanent magnets in applications above room temperature. This is due to a high Curie temperature, large magnetic moments,…

Strongly Correlated Electrons · Physics 2016-05-12 T. J. Williams , A. E. Taylor , A. D. Christianson , S. E. Hahn , R. S. Fishman , D. S. Parker , M. A. McGuire , B. C. Sales , M. D. Lumsden

Neutron diffraction studies as a function of temperature on solid solutions of MnSe and MnTe in the Se rich region are presented. Interestingly as Te is doped in MnSe, the structural transformation to NiAs phase diminishes, both in terms of…

Materials Science · Physics 2014-10-27 Kapil E. Ingle , J. B. C. Efrem D'Sa , A. Das , K. R. Priolkar

Thermal switching provides an effective way for active heat flow control, which has recently attracted increasing attention in terms of nanoscale thermal management technologies. In magnetic and spintronic materials, the thermal…

The Prototypical magnetic memory shape alloy Ni$_2$MnGa undergoes various phase transitions as a function of temperature, pressure, and doping. In the low-temperature phases below 260 K, an incommensurate structural modulation occurs along…

Strongly Correlated Electrons · Physics 2017-12-06 G. Lantz , M. J. Neugebauer , M. Kubli , M. Savoini , E. Abreu , K. Tasca , C. Dornes , V. Esposito , J. Rittmann , Y. W. Windsor , P. Beaud , G. Ingold , S. L. Johnson

Effective modulation of magnetic permeability plays a vital role in the development of high-performance inductors. Here, phase-field simulations of hard/soft ferrite composites (BaM/NiZn) clarify how exchange coupling and microstructure…

Materials Science · Physics 2025-11-26 Xinyu Xu , Wenqin Yue , Yueli Yu , Yongke Yan , Liwei D. Geng

The ground-state magnetic properties of hexagonal equiatomic alloy of nominal composition Mn_{0.8}Fe_{0.2}NiGe were investigated through dc magnetization and heat capacity measurements. The alloy undergoes first order martensitic transition…

Strongly Correlated Electrons · Physics 2015-06-23 P. Dutta , S. Pramanick , D. Venkateshwarlu , V. Ganesan , S. Majumdar , D. Das , S. Chatterjee

Hybrid organometallic systems offer a wide range of functionalities, including magnetoelectric interactions. However, the ability to design on-demand ME coupling remains challenging despite a variety of host-guest configurations and ME…

The magnetoelastic coupling in multiferroic $DyMn_2O_5$ is investigated by magnetostriction measurements along the three crystallographic orientations. Strong lattice anomalies as a function of the magnetic field are detected at the low…

Strongly Correlated Electrons · Physics 2007-05-23 C. R. dela Cruz , B. Lorenz , Y. Y. Sun , C. W. Chu , S. Park , S. -W. Cheong

We use neutron powder diffraction to investigate the magnetic and crystalline structure of Cr$_2$GaN. A magnetic phase transition is identified at $T \approx 170$ K, whereas no trace of structural transition is observed down to 6 K.…

To tune the magnetic properties of hexagonal ferrites, a family of magnetoelectric multiferroic materials, by atomic-scale structural engineering, we studied the effect of structural distortion on the magnetic ordering temperature (TN).…

In this paper we present detailed M\"ossbauer spectroscopy study of structural and magnetic properties of the undoped parent compound CaFe$_2$As$_2$ single crystal. By fitting the temperature dependence of the hyperfine magnetic field we…

Superconductivity · Physics 2011-06-10 Zhiwei Li , Xiaoming Ma , Hua Pang , Fashen Li

The electronic structure, magnetism and phase stability of Pt2-xMn1+xGa(x=0, 0.25, 0.5, 0.75, 1) alloys are studied by first-principle calculations. The calculations reveal that a potential magnetic martensitic transformation can be…

Materials Science · Physics 2015-03-03 L. Feng , E. K. Liu , W. X. Zhang , W. H. Wang , G. H. Wu

We have performed Density Functional Theory (DFT) based calculations to investigate the effects of stacking patterns on the electronic and magnetic properties of several Nitride MXenes. MXenes, a relatively new addition to the family of…

Materials Science · Physics 2024-05-28 Himangshu Sekhar Sarmah , Subhradip Ghosh

Nearly 30% increase of the ferromagnetic phase transition temperature has been achieved in strained MnAs nanocrystals embedded in a wurtzite GaAs matrix. Wurtzite GaAs exerts tensile stress on hexagonal MnAs nanocrystals, preventing a…

Resonant ultrasound spectroscopy and magnetic susceptibility experiments have been used to characterize strain coupling phenomena associated with structural and magnetic properties of the shape-memory Heusler alloy series…

Materials Science · Physics 2018-04-18 C. Salazar Mejia , N. -O. Born , J. A. Schiemer , C. Felser , M. A. Carpenter , M. Nicklas

We have investigated magnetization(M), magnetocaloric effect(MCE) and magnetothermopower(MTEP) in polycrystalline Pr0.6Sr0.4MnO3, which shows a second-order paramagnetic to ferromagnetic transition near room temperature (TC = 305 K).…

Strongly Correlated Electrons · Physics 2012-10-19 D. V. Maheshwar Repaka , T. S. Tripathi , M. Aparnadevi , R. Mahendiran

The paramagnetic insulator to ferromagnetic metal transition in Lanthanum manganites and the associated magnetoresistive phenomena is treated by considering the localization due to random hopping induced by slowly fluctuating spin…

Condensed Matter · Physics 2009-10-28 C. M. Varma

In a previous work a model was proposed for the phase transitions of crystals with localized magnetic moments which at low temperature have a "conical" arrangement that at higher T transforms into a more symmetrical structure (depending on…

Statistical Mechanics · Physics 2009-11-13 Vittorio Massidda
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