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The magnetic properties of the compound Fe$_5$Si$_{1-x}$P$_{x}$B$_2$ have been studied, with a focus on the Curie temperature $T_\textrm{C}$, saturation magnetization $M_\textrm{S}$, and magnetocrystalline anisotropy. Field and temperature…

Electronic structures, exchange interaction mechanism between magnetic ions and Curie temperature of Vanadium - doped Nitrides (AlN, GaN, and InN) are studied within KKR-LSDA-CPA. It is found that the ferromagnetic super-exchange…

材料科学 · 物理学 2008-01-10 V. A. Dinh , H. Katayama-Yoshida

The phase diagram of the multivalent manganites $\rm La_{1-x}Ca_xMnO_3$, in space of temperature and doping $x$, is a challenge for the theoretical physics. It is an important test for the model used to study these compounds and the method…

强关联电子 · 物理学 2012-07-26 Vasil Michev , Naoum Karchev

This work investigates how grain boundaries (GBs) modify magnetic exchange interactions in bcc iron, with particular focus on the effect of phosphorus segregation. Using density-functional theory combined with the…

材料科学 · 物理学 2026-04-14 Martin Zelený , Martin Heczko , Petr Šesták , Denis Ledue , Renaud Patte , Miroslav Černý

Debye temperature, $\Theta_D$, of Fe-rich Fe$_{100-x}$Cr$_x$ disordered alloys with $0\le x \le 22.3$ was determined from the temperature dependence of the central shift of M\"ossbauer spectra recorded in the temperature range of 60 -- 300…

材料科学 · 物理学 2010-02-17 B. F. O. Costa , J. Cieslak , S. M. Dubiel

The FeSe superconductor and its related systems have attracted much attention in the iron-based superconductors owing to their simple crystal structure and peculiar electronic and physical properties. The bulk FeSe superconductor has a…

超导电性 · 物理学 2015-06-24 Xu Liu , Lin Zhao , Shaolong He , Junfeng He , Defa Liu , Daixiang Mou , Bing Shen , Yong Hu , Jianwei Huang , X. J. Zhou

Neutron diffraction experiments on TmTe at pressures up to 7 GPa are reported. The semiconductor-to-metal transition occurring at 2 GPa in this compound is accompanied by the appearance of strong ferromagnetic exchange interactions…

强关联电子 · 物理学 2009-10-30 P. Link , I. N. Goncharenko , J. -M. Mignot , T. Matsumura , T. Suzuki

The Fe$_{n}$GeTe$_{2}$ systems are newly discovered two-dimensional van-der-Waals materials, exhibiting magnetism at room temperature. The sub-systems belonging to Fe$_{n}$GeTe$_{2}$ class are special because they show site-dependent…

材料科学 · 物理学 2022-12-19 Sukanya Ghosh , Soheil Ershadrad , Vladislav Borisov , Biplab Sanyal

The discovery of van der Waals magnets has established a new domain in the field of magnetism, opening novel pathways for the electrical control of magnetic properties. In this context, Fe3GeTe2 (FGT) emerges as an exemplary candidate owing…

The physical systems with ferromagnetism and "bad" metallicity hosting unusual transport properties are playgrounds of novel quantum phenomena. Recently EuTi$_{1-x}$Nb$_x$O$_3$ emerged as a ferromagnetic system where non-trivial temperature…

In this work a simple concept was used for a systematic search for new materials with high spin polarization. It is based on two semi-empirical models. Firstly, the Slater-Pauling rule was used for estimation of the magnetic moment. This…

The temperature dependent energy transfer rate between charge carriers and lattice has been experimentally investigated in ferromagnetic semiconductors. Studied 100 nm thick low-temperature MBE grown Mn_{x}Ga_{1-x}As samples had manganese…

材料科学 · 物理学 2009-11-11 J. M. Kivioja , M. Prunnila , S. Novikov , P. Kuivalainen , J. Ahopelto

Recent realizations of intrinsic, long-range magnetic orders in two-dimensional (2D) van der Waals materials have ignited tremendous research interests. In this work, we employ the XXZ Heisenberg model and Monte Carlo simulations to study a…

介观与纳米尺度物理 · 物理学 2020-03-17 Xiaobo Lu , Ruixiang Fei , Li Yang

The influence of pressure on the magnetically ordered CePd_{2.02}Ge_{1.98} has been investigated by a combined measurement of electrical resistivity, $\rho(T)$, and ac-calorimetry, C(T), for temperatures in the range 0.3 K<T<10 K and…

强关联电子 · 物理学 2009-11-07 H. Wilhelm , D. Jaccard

Employing first-principles electronic structure calculations in conjunction with the frozen-magnon method we study the effective exchange interactions and spin waves in local moment ferromagnets. As prototypes we have chosen three…

材料科学 · 物理学 2012-10-30 I. Galanakis , E. Sasioglu

We review many-body effects, their microscopic origin, as well as their impact onto thermoelectricity in correlated narrow-gap semiconductors. Members of this class---such as FeSi and FeSb$_2$---display an unusual temperature dependence in…

强关联电子 · 物理学 2018-04-11 Jan M. Tomczak

The superconducting transition temperatures of high-Tc compounds based on copper, iron, ruthenium and certain organic molecules are discovered to be dependent on bond lengths, ionic valences, and Coulomb coupling between electronic bands in…

超导电性 · 物理学 2012-07-03 Dale R. Harshman , Anthony T. Fiory

We theoretically analyze the topological insulator (TI) surface state mediated interactions between local moments in a proximate 2D ferromagnetic insulator (FMI) motivated by recent experiments that show a significant increase in the Curie…

强关联电子 · 物理学 2025-10-24 Murod Mirzhalilov , Nandini Trivedi , Mohit Randeria

We investigate the emergence of ferromagnetism in the two-dimensional metal-halide CoBr$_2$, with a special focus on the role of electronic correlations. The calculated phonon spectrum shows that the system is thermodynamically stable…

强关联电子 · 物理学 2021-05-13 Hrishit Banerjee , Markus Aichhorn

We report the magnetic, electrical, and magnetotransport (Hall effect) properties of the hexagonal itinerant ferromagnet Cr$_{0.83}$Te. Further, a comprehensive study of the magneto-entropy scaling behavior has been done around the Curie…