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Electronic structure and magnetic properties of ZrFe$_2$ with a cubic Laves phase are investigated by calculations based on the density functional theory. The total magnetic moment (m) of 3.14 $\mu_B$ per formula unit (\emph{f.u.}) is…

Materials Science · Physics 2015-05-22 Wenxu Zhang , Wanli Zhang

Transition metal dihalides (MX$_2$, M= transition metal, X= halide) have attracted much attention recently due to their intriguing low-dimensional magnetic properties. Particular focus has been placed in this family in the context of…

Materials Science · Physics 2024-04-26 Soumen Bag , Jesse Kapeghian , Onur Erten , Antia S. Botana

The pressure-temperature phase diagram of an intermediate-valence compound YbPd was revealed via simultaneous ac-calorimetry and electrical resistivity measurements. Two successive structural phase transition temperatures, $T_1$ = 125 K and…

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…

The magnetic and surface properties of some transition metals have been investigated within the tight-binding approximation, including Coulomb correlations. These surface properties are calculated after applying a charge neutrality rule…

Materials Science · Physics 2025-08-05 Jacques R. Eone

Double perovskite oxide materials have garnered tremendous interest due to their strong spin-lattice-charge coupling. Interesting in their own right, rare-earth-based DPOs have yet to be subjected to high-pressure studies. In this paper, we…

In a magnetically driven electronic nematic state, an externally applied uniaxial strain rounds the nematic transition and increases the magnetic transition temperature. We study both effects in a simple classical model of the…

Superconductivity · Physics 2016-11-26 Jiangping Hu , Chandan Setty , Steve Kivelson

We present the results of magnetization and magneto-transport measurements in the superconducting state of an as-cast Nb$_{75}$Zr$_{25}$ alloy. We also report the careful investigation of the microstructure of our sample at various length…

Superconductivity · Physics 2016-07-20 Jagdish Chandra , Meghmalhar Manekar , V. K. Sharma , Puspen Mondal , Pragya Tiwari , S. B. Roy

This paper presents structural, detailed magnetic, and exchange bias studies in polycrystalline Ba$_{2}$ScRuO$_{6}$ synthesized at ambient pressure. In contrast to its strontium analogue, this material crystallizes in a 6L hexagonal…

Materials Science · Physics 2023-04-28 Prachi Mohanty , Sourav Marik , R. P. Singh

We study theoretically the variation of the magnetic and the structural transition temperatures of the iron arsenide superconductors with external uniaxial stress. We show that the increase of the transition temperatures reported in recent…

Strongly Correlated Electrons · Physics 2015-06-03 A. Cano , I. Paul

The electronic structures of four Laves phase iron compounds (e.g. YFe$_2$, ZrFe$_2$, LuFe$_2$ and HfFe$_2$) have been calculated by the state-of-the-art full potential electronic structure code. The magnetic moments collapse under…

Materials Science · Physics 2015-12-08 Wenxu Zhang , Wanli Zhang

We report on measurements of the magnetic susceptibility and electrical resistance under He-gas pressure on single crystals of Ca(Fe$_{1-x}$Co$_{x}$)$_{2}$As$_{2}$. We find that for properly heat-treated crystals with modest…

Superconductivity · Physics 2013-11-14 E. Gati , S. Köhler , D. Guterding , B. Wolf , S. Knöner , S. Ran , S. L. Bud'ko , P. C. Canfield , M. Lang

In order to probe the changes in the valence state and magnetic properties of Eu metal under extreme pressure, x-ray absorption near-edge spectroscopy, x-ray magnetic circular dichroism and synchrotron M\"ossbauer spectroscopy experiments…

Magnetism in transition metal compounds is usually considered starting from a description of isolated ions, as exact as possible, and treating their (exchange) interaction at a later stage. We show that this standard approach may break down…

Strongly Correlated Electrons · Physics 2016-10-24 S. V. Streltsov , D. I. Khomskii

A novel medium Mn steel of composition Fe-12Mn-4.8Al-2Si-0.32C-0.3V was manufactured with 1.09 GPa yield strength, 1.26 GPa tensile strength and 54% elongation. The thermomechanical process route was designed to be industrially translatable…

Materials Science · Physics 2020-04-22 T W J Kwok , K M Rahman , X Xu , I Bantounas , J F Kelleher , S Daswari , T Alam , R Banerjee , D Dye

We present a detailed theoretical study of the electronic, magnetic, and structural properties of magnesiow\"ustite Fe$_{1-x}$Mg$_x$O with $x$ in the range between 0$-$0.875 using a fully charge self-consistent implementation of the density…

Strongly Correlated Electrons · Physics 2017-08-24 I. Leonov , A. Ponomareva , R. Nazarov , I. A. Abrikosov

We report high pressure structural phase transformation sequence in a layered Iron-based superconducting compound FeSe0.3Te0.7 to 31 GPa at room temperature. The ambient pressure PbO type tetragonal phase (Space Group - P4/nmm) transforms…

Materials Science · Physics 2011-05-05 Andrew K. Stemshorn , Yogesh K. Vohra , Phillip M. Wu , F. C. Hsu , Y. L. Huang , M. K. Wu , K. W. Yeh

Phase transition is a fundamental phenomenon in condensed matter physics, in which states of matter transform to each other with various critical behaviors under different conditions. The magnetic martensitic transformation features…

Optical measurements under externally applied stresses allow us to study the materials' electronic structure by comparing the pressure evolution of optical peaks obtained from experiments and theoretical calculations. We examine the…

Ab initio molecular dynamic method within the framework of density functional theory is applied to analyze the structural and electronic properties of crystalline molecular hydrogen at temperature 100\,K. Pressure, pair correlation function…

Materials Science · Physics 2022-01-12 I. Saitov