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Related papers: Bulk and surface switching in Mn-Fe-based Prussian…

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We present a computational scheme for total energy calculations of disordered alloys with strong electronic correlations. It employs the coherent potential approximation combined with the dynamical mean-field theory and allows one to study…

Strongly Correlated Electrons · Physics 2015-10-02 A. S. Belozerov , A. I. Poteryaev , S. L. Skornyakov , V. I. Anisimov

Magnetic and magneto-functional behavior of a Fe-doped MnNiGe alloy with nominal composition Mn$_{0.85}$Fe$_{0.15}$NiGe have been investigated in ambient as well as in high pressure condition. The alloy undergoes first order martensitic…

Strongly Correlated Electrons · Physics 2016-09-21 P. Dutta , S. Pramanick , D. Das , S. Chatterjee

We have observed the magnetoelectric response at room temperature and above in high-resistive ceramics made of multiferroic Pb(Fe1/2Nb1/2)O3 (PFN) and PFN-based solid solution 0.91PFN-0.09PbTiO3 (PFN-PT). The value of the…

We used temperature dependent high-resolution x-ray powder diffraction and magnetization measurements to investigate structural, magnetic and electronic degrees of freedom across the ferromagnetic magneto-elastic phase transition in…

Materials Science · Physics 2018-12-19 M. Maschek , X. You , M. F. J. Boeije , D. Chernyshov , N. H. van Dijk , E. Bruck

This work reports an exchange bias (EB) effect up to room temperature in the binary intermetallic bulk compound Mn3.04Ge0.96. The sample annealed at 700 K crystallizes in a tetragonal structure with ferromagnetic ordering, whereas, the…

Materials Science · Physics 2015-06-17 Jin- Feng Qian , Ajaya K. Nayak , Guido Kreiner , Walter Schnelle , Claudia Felser

We have investigated the temperature-dependent changes in the near-$E$$_F$ occupied and unoccupied states of Pr$_{0.67}$Ca$_{0.33}$MnO$_3$ which shows the presence of ferromagnetic and antiferromagnetic phases. The temperature-dependent…

Strongly Correlated Electrons · Physics 2009-11-11 M. K. Dalai , P. Pal , B. R. Sekhar , N. L. Saini , R. K. Singhal , K. B. Garg , B. Doyle , S. Nannarone , C. Martin , F. Studer

The correlation between magnetic properties and microscopic structural aspects in the diluted magnetic semiconductor Ge$_{1-x}$Mn$_{x}$Te is investigated by x-ray diffraction and magnetization as a function of the Mn concentration $x$. The…

Strongly Correlated Electrons · Physics 2017-06-20 M. Kriener , T. Nakajima , Y. Kaneko , A. Kikkawa , D. Hashizume , K. Kato , M. Takata , T. Arima , Y. Tokura , Y. Taguchi

This study explores the transitional characteristics of blue-core helicon discharge, which to our knowledge was not particularly focused on before. Parameters are measured on recently built advanced linear plasma device, i.e. Multiple…

We have studied possible candidates for laser cooling transitions in $^{169}$Tm in the spectral region 410 -- 420 nm. By means of saturation absorption spectroscopy we have measured the hyperfine structure and rates of two nearly closed…

The study was aimed at determination of the position of the Fe-rich border of the metastable miscibility gap (MMG) and of the solubility limit of Cr in iron at 858 K. Towards this end a Fe73.7Cr26.3 alloy was isothermally annealed at 858 K…

Materials Science · Physics 2023-06-14 Stanisław M. Dubiel , Jan Żukrowski

Phonon densities of states (DOS) of bcc $\alpha$-$^{57}$Fe were measured from room temperature through the 1044K Curie transition and the 1185K fcc $\gamma$-Fe phase transition using nuclear resonant inelastic x-ray scattering. At higher…

Materials Science · Physics 2015-06-19 L. Mauger , M. S. Lucas , J. A. Muñoz , S. J. Tracy , M. Kresch , Yuming Xiao , Paul Chow , B. Fultz

The electronic band structure of the (Ga,Mn)As system has been one of the most intriguing problems in solid state physics over the past two decades. Determination of the band structure evolution with increasing Mn concentration is a key…

We present a time-resolved angle-resolved photoelectron spectroscopy study of IrTe$_2$, which undergoes two first-order structural and charge-ordered phase transitions on cooling below 270 K and below 180 K. The possibility of inducing a…

Strongly Correlated Electrons · Physics 2018-03-14 C. Monney , A. Schuler , T. Jaouen , M. -L. Mottas , Th. Wolf , M. Merz , M. Muntwiler , L. Castiglioni , P. Aebi , F. Weber , M. Hengsberger

We report annealing induced exchange bias in Fe-Cu-Pt based heterostructures with Cu as an intermediate layer (Fe/Cu/Pt heterostructure) and capping layer (Fe/Pt/Cu heterostructure). Exchange bias observed at room temperature (300 K) is…

Materials Science · Physics 2019-04-26 M. A. Basha , Harsh Bhatt , Yogesh Kumar , C. L. Prajapat , M. Gupta , V. Karki , S. Basu , Surendra Singh

We study the magnetocaloric effect and critical behavior of Co$_2$Cr$_{1-x}$Mn$_x$Al ($x=$ 0.25, 0.5, 0.75) Heusler alloys across the ferromagnetic (FM) transition (T$_{\rm C}$). The Rietveld refinement of x-ray diffraction patterns exhibit…

Materials Science · Physics 2020-01-08 Priyanka Nehla , V. K. Anand , Bastian Klemke , Bella Lake , R. S. Dhaka

The ferroelectric to paraelectric phase transition in LiTaO$_3$ and in pure as well as Mg doped LiNbO$_3$ is investigated theoretically by atomistic calculations in the framework of the density functional theory, as well as experimentally…

Previous high-resolution angle-resolved photoemission (ARPES) studies of URu$_2$Si$_2$ have characterized the temperature-dependent behavior of narrow-band states close to the Fermi level ($E_\mathrm{F}$) at low photon energies near the…

Strongly Correlated Electrons · Physics 2022-03-01 J. D. Denlinger , J. -S. Kang , L. Dudy , J. W. Allen , Kyoo Kim , J. -H. Shim , K. Haule , J. L. Sarrao , N. P. Butch , M. B. Maple

Elastic neutron-scattering, inelastic x-ray scattering, specific-heat, and pressure-dependent electrical transport measurements have been made on single crystals of AuZn and Au_{0.52}Zn_{0.48} above and below their martensitic transition…

The Fermi surfaces (FS's) and band dispersions of EuRh2As2 have been investigated using angle-resolved photoemission spectroscopy. The results in the high-temperature paramagnetic state are in good agreement with the full potential…

A combination of first-principles density functional theory calculations and a search over structures predicts the stability of a proton-transfer modification of ammonia monohydrate with space group P4/nmm. The phase diagram is calculated…