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The crystal structure and electrical resistance of the structurally-layered EuFe2As2 have been studied up to 70 GPa and down to temperature of 10 K, using a synchrotron x-ray source and the designer diamond anvils. The room-temperature…

Polycrystalline samples of A$_x$V$_2$Al$_{20}$ (A = Ce, Th, U, Np, Pu; 0.7 =< x =< 1.0) actinide intermetallics were synthesized using the arc-melting method. Crystal structure studies were performed by means of powder x-ray diffraction and…

The elastic and magnetic properties, thermodynamical stability, deviation from stoichiometry and order/disorder transformations of phases that are relevant to Be alloys were investigated using density functional theory simulations coupled…

Materials Science · Physics 2015-04-01 Patrick A. Burr , Simon C. Middleburgh , Robin W. Grimes

Uranium manganese germanide, UMn2Ge2, crystallizes in body-centered tetragonal ThCr2Si2 structure with space group I4/mmm, a = 3.993A and c = 10.809A under ambient conditions. Energy dispersive X-ray diffraction was used to study the…

Materials Science · Physics 2009-11-10 Vasudeva Siruguri , S. K. Paranjpe , P. Raj , A. Sathyamoorthy , Jean Paul Itie , Alain Polian

We present a comprehensive investigation into the physical properties of intermetallic ErPd$_2$Si$_2$, a compound renowned for its intriguing magnetic and electronic characteristics. We confirm the tetragonal crystal structure of…

Strongly Correlated Electrons · Physics 2024-12-30 Kaitong Sun , Si Wu , Guanping Xu , Lingwei Li , Hongyu Chen , Qian Zhao , Muqing Su , Wolfgang Schmidt , Chongde Cao , Hai-Feng Li

Uranium and plutonium's 5f electrons are tenuously poised between strongly bonding with ligand spd-states and residing close to the nucleus. The unusual properties of these elements and their compounds (eg. the six different allotropes of…

Heat capacity and anisotropic thermal expansion was measured for Fe1.06Te and FeTe0.5Se0.5 single crystals. Previously reported phase transitions are clearly seen in both measurements. In both cases the thermal expansion is anisotropic. The…

Superconductivity · Physics 2015-05-13 S. L. Bud'ko , P. C. Canfield , A. S. Sefat , B. C. Sales , M. A. McGuire , D. Mandrus

Intermetallic compounds R2Fe17 are perspective for applications as permanent magnets. Technologically these systems must have Curie temperature Tc much higher than room temperature and preferably have easy axis anisotropy. At the moment…

Strongly Correlated Electrons · Physics 2011-06-29 E. E. Kokorina , M. V. Medvedev , I. A. Nekrasov

We report measurements of the thermal expansion for two Eu$^{+2}$- and two Gd$^{+3}$-based intermetallics which exhibit ferro- or antiferromagnetic phase transitions. These materials show sharp positive (EuAgMg and GdAuMg) and negative…

Materials Science · Physics 2009-11-13 J. Rohrkamp , O. Heyer , T. Fickenscher , R. Poettgen , S. Jodlauk , H. Hartmann , T. Lorenz , J. A. Mydosh

Au-Fe alloys are of immense interest due to their biocompatibility, anomalous hall conductivity, and applications in various medical treatment. However, irrespective of the method of preparation, they often exhibit a high-level of disorder,…

Materials Science · Physics 2017-09-27 Jiban Kangsabanik , Rajiv K. Chouhan , D. D. Johnson , Aftab Alam

This work reports superconductivity studies in the intermetallic Ti$_{0.85}$Pd$_{0.15}$ performed in normal conditions and under hydrostatic pressure. The crystal structure of the compound has a body centered cubic at room temperature and…

Superconductivity · Physics 2020-05-20 C. Reyes-Damián , F. Morales , Esmeralda Martínez-Piñeiro , Roberto Escudero

Beryllium (Be) alloys are indispensable in cutting-edge applications due to their unique advantages. However, the scientific understanding about their structure and property is deficient, which greatly restricts their applications within a…

Materials Science · Physics 2024-11-26 Q. D. Hao , H. Wang , X. R. Chen , Hua Y. Geng

Here we perform $ab-initio$ study of Curie temperature $T_C$ under hydrostatic pressure for intermetallic compound GdFe$_2$. To calculate $T_C$ for GdFe$_2$ we applied mean-field solution of the Heisenberg model for several magnetic…

Materials Science · Physics 2019-07-23 Kokorina E. E. , Medvedev M. V. , Nekrasov I. A

Using density functional theory (DFT), the structural, mechanical, electronic, thermal, and optical properties of Hf2AB (A = Pb, Bi) borides were studied, considering the pressure effect up to 50 GPa. The lattice constants were found to be…

Materials Science · Physics 2022-12-20 M. S. Hossain , N. Jahan , M. M. Hossain , M. M. Uddin , M. A. Ali

X-ray diffraction experiments under pressure in a diamond anvil cell have been performed to gauge any response of the crystalline lattice of URu2Si2 to the "hidden order" or antiferromagnetic transitions, the latter of which is accessible…

Strongly Correlated Electrons · Physics 2010-09-29 J. R. Jeffries , N. P. Butch , J. J. Hamlin , S. V. Sinogeikin , W. J. Evans , M. B. Maple

Measurements of magnetic susceptibility, specific heat, and electrical resistivity at applied pressures up to 55 kbar have been carried out on single crystals of the heavy-fermion antiferromagnet U_3Ni_5Al_19, which crystallizes in the…

Strongly Correlated Electrons · Physics 2009-11-10 E. D. Bauer , V. A. Sidorov , S. Bobev , D. J. Mixson , J. D. Thompson , J. L. Sarrao , M. F. Hundley

We report measurements and calculations on the properties of the intermetallic compound Be$_5$Pt. High-quality polycrystalline samples show a nearly constant temperature dependence of the electrical resistivity over a wide temperature…

In this work we report the physical properties of the new intermetallic compound TbRhIn5 investigated by means of temperature dependent magnetic susceptibility, electrical resistivity, heat-capacity and resonant x-ray magnetic diffraction…

Strongly Correlated Electrons · Physics 2007-05-23 R. Lora-Serrano , C. Giles , E. Granado , D. J. Garcia , E. Miranda , O. Aguero , L. Mendonca Ferreira , J. G. S. Duque , P. G. Pagliuso

In order to tune the magnetic properties of the cleavable high-Curie temperature ferromagnet Fe$_{5-x}$GeTe$_2$, the effect of increasing the electron count through arsenic substitution has been investigated. Small additions of arsenic (2.5…

Materials Science · Physics 2021-11-15 Andrew F. May , Jiaqiang Yan , Raphael Hermann , Mao-Hua Du , Michael A. McGuire

Uranium ditelluride (UTe$_2$) has attracted recent interest due to its unique superconducting properties, which include the potential for a topological odd-parity superconducting state. Recently, ac-calorimetry measurements under pressure…

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