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Half-metallic ferromagnetism (HMFM) occurs rarely in materials and yet offers great potential for spintronic devices. Recent experiments suggest a class of compounds with the `ThCr$_{2}$Si$_{2}$' (122) structure -- isostructural and…

Materials Science · Physics 2020-08-18 Sinead M. Griffin , Jeffrey B. Neaton

We propose two-dimensional (2D) Ising-type ferromagnetic semiconductors TcSiTe3, TcGeSe3, and TcGeTe3 with high Curie temperatures around 200-0500 K. Owing to large spin-orbit couplings, the large magnetocrystalline anisotropy energy (MAE),…

Materials Science · Physics 2020-01-07 Jing-Yang You , Zhen Zhang , Xue-Juan Dong , Bo Gu , Gang Su

Searching ferromagnetic semiconductor materials with electrically controllable spin polarization is a long-term challenge for spintronics. Bipolar magnetic semiconductors (BMS), with valence and conduction band edges fully spin-polarized in…

Materials Science · Physics 2021-12-13 Haidi Wang , Qingqing Feng , Xingxing Li , Jinlong Yang

This work reports on structural and magnetic investigations of the Heusler compound Co$_2$FeSi. X-Ray diffraction and M\"o\ss bauer spectrometry indicate an ordered $L2_1$ structure. Magnetic measurements by means of X-ray magnetic circular…

The electronic structure of the ferromagnetic material CeRh$_{3}$B$_{2}$ is studied by means of first-principles calculations with an emphasis on the treatment of localized $4f$ states around Ce. Via the construction of an effective spin…

Materials Science · Physics 2019-03-21 Shotaro Doi , Munehisa Matsumoto

We determine from first-principles the Curie temperature Tc for bulk Co in the hcp, fcc, bcc, and tetragonalized bct phases, for FeCo alloys, and for bcc and bct Fe. For bcc-Co, Tc=1420 K is predicted. This would be the highest Curie…

Materials Science · Physics 2007-05-23 Marjana Lezaic , Phivos Mavropoulos , Stefan Blügel

Gd6FeBi2 is reported as the only one room-temperature magnet with a Curie temperature (Tc) of ca. 350 K among more than hundreds of compounds with its structural type, which makes it more attractive in potential applications. To reveal the…

Applied Physics · Physics 2020-02-18 Guoming Cui , Huan Ma , Kam Wa Wong , Chan Hung Shek , Guangcun Shan , Jiliang Zhang

Recently, two-dimensional materials and nanoparticles with robust ferromagnetism are even of great interest to explore basic physics in nanoscale spintronics. More importantly, room-temperature magnetic semiconducting materials with high…

Materials Science · Physics 2018-03-23 Xi Chen , Zheng-Zhe Lin

We use a combination of symmetry analysis and high-throughput density functional theory calculations to search for new ferroelectric materials. We use two search strategies to identify candidate materials. In the first strategy, we start…

Materials Science · Physics 2018-02-07 Kevin F. Garrity

Half-metallicity (HM) offers great potential for engineering spintronic applications, yet only few magnetic materials present metallicity in just one spin channel. In addition, most HM systems become magnetically disordered at temperatures…

Materials Science · Physics 2018-12-13 Muhammad Atif Sattar , S. Aftab Ahmad , Fayyaz Hussain , Claudio Cazorla

The search for two-dimensional (2D) magnetic materials has attracted a great deal of attention because of the experimental synthesis of 2D CrI$_3$, which has a measured Curie temperature of 45 K. Often times, these monolayers have a higher…

Strongly Correlated Electrons · Physics 2023-01-16 Daniel Wines , Kamal Choudhary , Francesca Tavazza

A two-dimensional scandium monochloride sheet was investigated by using density functional theory. It could be exfoliated from a known bulk material with a cleavage energy slightly lower than that of graphene. The sheet has a ferromagnetic…

Materials Science · Physics 2018-12-26 Guo Wang , Xinyu Wang , Yi Liao

Ferromagnetic semiconductors discovered in two-dimensional (2D) materials open an avenue for highly integrated and multifunctional spintronics. The Curie temperature (TC) of existed 2D ferromagnetic semiconductors is extremely low and the…

Materials Science · Physics 2021-11-02 Wenxuan Zhu , Cheng Song , Lei Han , Hua Bai , Qian Wang , Siqi Yin , Lin Huang , Tongjin Chen , Feng Pan

Two-dimensional materials have been gaining great attention as they displayed a broad series of electronic properties that ranging from superconductivity to topology. Among them, those which possess magnetism are most desirable, enabling us…

Materials Science · Physics 2019-06-14 Fang Zhang , Xing-Qiang Shi , Zi-Kang Tang

Recent materials research has advanced the maximum ferromagnetic transition temperature in semiconductors containing magnetic elements toward room temperature. Reaching this goal would make information technology applications of these…

Materials Science · Physics 2009-11-07 T. Jungwirth , Jairo Sinova , J. Kučera , A. H. MacDonald

The scientists have shown great interest in the search for alternative means to generate energy, which are not contaminants and generate significant damage to the environment. One of the quite viable possibilities for this is to consider…

Physics Education · Physics 2018-12-27 Alex Estupiñán , Rubén Rodríguez , Jhon Amaya

The recent observations of ferromagnetic order in several two-dimensional (2D) materials have generated an enormous interest in the physical mechanisms underlying 2D magnetism. In the present prospective article we show that Density…

Materials Science · Physics 2020-02-18 Thomas Olsen

Recent years have seen a tremendous rise of two-dimensional (2D) magnetic materials, several of which verified experimentally. However, most of the theoretical predictions to date rely on ab-initio methods, at zero temperature and…

Statistical Mechanics · Physics 2020-08-11 Joren Vanherck , Cihan Bacaksiz , Bart Sorée , Milorad V. Milošević , Wim Magnus

La2Au2Cd and Ce2Au2Cd were prepared from the elements by reactions in sealed tantalum tubes in a water-cooled sample chamber of an induction furnace. These intermetallics crystallize with the tetragonal Mo2FeB2 type, space group P4/mbm.…

Materials Science · Physics 2009-11-11 S. Rayaprol , R. Poettgen

Occurrence of room temperature ferromagnetism is demonstrated in pulsed laser deposited thin films of Sn1-xCoxO2-d (x<0.3). Interestingly, films of Sn0.95Co0.05O2-d grown on R-plane sapphire not only exhibit ferromagnetism with a Curie…