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We theoretically investigate ferromagnetic ordering in magnetically doped solid-solution narrow-gap semiconductors with the strong spin-orbit interaction such as Cr-doped Bi$_2$(Se$_x$Te$_{1-x}$)$_3$. We compute the spontaneous…

Mesoscale and Nanoscale Physics · Physics 2016-04-13 Daichi Kurebayashi , Kentaro Nomura

Nowdays, multiferroic materials with magnetoelectric coupling have many real-world applications in the fields of novel memory devices. It is challenging is to create multiferroic materials with strongly coupled ferroelectric and…

Materials Science · Physics 2018-05-29 Deobrat Singh , Sanjeev K. Gupta , Haiying He , Yogesh Sonvane

We report muon spin relaxation measurements on the magnetic structures of RBaCo_2O_5.5 with R=Y, Tb, Dy, and Ho. Three different phases, one ferrimagnetic and two antiferromagnetic, are identified below 300 K. They consist of different…

Strongly Correlated Electrons · Physics 2009-11-13 H. Luetkens , M. Stingaciu , Yu. G. Pashkevich , K. Conder , E. Pomjakushina , A. A. Gusev , K. V. Lamonova , P. Lemmens , H. -H. Klauss

The crystallographic, magnetic, and transport properties of the van der Waals bonded, layered compound CrTe3 have been investigated on single crystal and polycrystalline materials. The crystal structure contains layers made up of lozenge…

Strongly Correlated Electrons · Physics 2017-04-19 Michael A. McGuire , V. Ovidiu Garlea , Santosh KC , Valentino R. Cooper , Jiaqiang Yan , Huibo Cao , Brian C. Sales

We report the comprehensive experimental results identifying the magnetic spin ordering and the magnetization dynamics of a double perovskite Pr2CoFeO6 by employing the (dc and ac) magnetization, powder neutron diffraction (NPD) and X-ray…

The d.c. magnetization and magnetic relaxation studies of the calcium doped samples, Y0.95Ca0.05BaCo2O5.5 and YBa0.95Ca0.05Co2O5.5, show the existence of a magnetic glass like behaviour in the family of cobaltites for the first time. Our…

Materials Science · Physics 2012-11-09 Tapati Sarkar , V. Pralong , B. Raveau

Spin density waves, based on modulated local moments, are usually associated with metallic materials, but have recently been reported in insulators which display coupled magnetic and structural order parameters. We discuss one such example,…

Materials Science · Physics 2020-07-30 N. Giles-Donovan , N. Qureshi , R. D. Johnson , L. Y. Zhang , S. -W. Cheong , S. Cochran , C. Stock

Single crystalline (Bi,Ca)MnO3 (74< %Ca <82) were studied with neutron scattering, electron diffraction and bulk magnetic measurement. We discovered dynamic ferromagnetic spin correlations at high temperatures, which are replaced by…

Strongly Correlated Electrons · Physics 2009-10-28 Wei Bao , J. D. Axe , C. H. Chen , S-W. Cheong

We report on structural, magnetic and electronic properties of Co-implanted TiO2 rutile single crystals for different implantation doses. Strong ferromagnetism at room temperature and above is observed in TiO2 rutile plates after cobalt ion…

The discovery of ferromagnetism in two-dimensional (2D) monolayers has stimulated growing research interest in both spintronics and material science. However, these 2D ferromagnetic layers are mainly prepared through an incompatible…

Materials Science · Physics 2023-02-02 Qianwen Zhao , ChaoChao Xia , Hanying Zhang , Baiqing Jiang , Tunan Xie , Kaihua Lou , Chong Bi

Systems with pronounced spin anisotropy play a pivotal role in advancing magnetization switching and spin-wave generation mechanisms, which are fundamental for spintronic technologies. Quasi-van der Waals ferromagnets, particularly…

Twist engineering of magnetic van der Waals (vdW) moir\'e superlattices provides an attractive way to achieve precise nanoscale control over the spin degree of freedom on two-dimensional flatland. Despite the very recent demonstrations of…

The crystallographic and magnetic phase diagram of the n=2 layered manganite La2-2xSr1+2xMn2O7 in the region x=>0.5 has been studied using temperature dependent neutron powder diffraction. The magnetic phase diagram reveals a progression of…

Materials Science · Physics 2009-10-31 C. D. Ling , J. E. Millburn , J. F. Mitchell , D. N. Argyriou J. Linton , H. N. Bordallo

Fe$_{3}$GeTe$_{2}$ is a two-dimensional van der Waals material with a ferromagnetic ground state and a maximum transition temperature $T_{\mathrm{c}}\sim225$ K. However, when Fe$_{3}$GeTe$_{2}$ is synthesized lower values of…

Materials Science · Physics 2022-02-08 D. A. Mayoh , G. D. A. Wood , S. J. R. Holt , G. Beckett , E. J. L. Dekker , M. R. Lees , G. Balakrishnan

The recent discovery of magnetic ordering in two-dimension has lead to colossal efforts to find atomically thin materials that order at high temperatures. However, due to fundamental spin fluctuation in reduced dimension, the…

Strongly Correlated Electrons · Physics 2023-05-02 Chandan K. Singh , Mukul Kabir

The Cobalt-germanium (Co-Ge) is a fascinating complex alloy system that has unique structure and exhibit range of interesting magnetic properties which would change when reduce to nanoscale dimension. At this experimental work, the…

Mesoscale and Nanoscale Physics · Physics 2017-06-16 Mohammad Salehi-Fashami , Ralph Skomski , Balamurugan Balasubramanian , D. J. Sellmyer , George C. Hadjipanayis

In this paper we examine the role of crystal chemistry factors in creating conditions for formation of magnetoelectric ordering in BiFeO3. It is generally accepted that the main reason of the ferroelectric distortion in BiFeO3 is concerned…

Materials Science · Physics 2011-06-03 L. M. Volkova , D. V. Marinin

Iron telluride FeTe is known to display bicollinear magnetic order at low temperatures together with a monoclinic lattice distortion. Because the bicollinear order can involve two different wavevectors $(\pi/2,\pi/2)$ and $(\pi/2,-\pi/2)$,…

Strongly Correlated Electrons · Physics 2017-07-26 C. B. Bishop , J. Herbrych , E. Dagotto , A. Moreo

High-entropy spinel oxides provide an excellent platform for investigating entropy-stabilized correlated systems with strong configurational disorder. In this work, we systematically study the temperature evolution of the structural and…

The chiral helimagnet Cr1/3NbS2 has been investigated by magnetic, transport and thermal properties measurements on single crystals and by first principles electronic structure calculations. From the measured field and temperature…

Strongly Correlated Electrons · Physics 2015-03-25 N. J. Ghimire , M. A. McGuire , D. S. Parker , B. Sipos , S. Tang , J. -Q. Yan , B. C. Sales , D. Mandrus