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Powder neutron diffraction experiments have been employed to establish the effects of site-selective magnetic dilution in the Sm2MnMnMn4-x Tix O12 A-site columnar ordered quadruple perovskite manganites (x = 1, x = 2 and x = 3). We show…

Strongly Correlated Electrons · Physics 2021-01-04 Anuradha M. Vibhakar , Dmitry D. Khalyavin , Pascal Manuel , Ran Liu , Kazunari Yamaura , Alexei A. Belik , Roger D. Johnson

Here we report the magnetic and heat capacity studies of the double perovskite com-pounds Ba2SmRuO6 and Ba2DyRuO6. Antiferromagnetic transitions are inferred at 54 K and 47 K in Ba2SmRuO6 and Ba2DyRuO6, respectively in the magnetization…

Materials Science · Physics 2007-07-10 Rakesh Kumar , C. V. Tomy , R. Nagarajan , P. L. Paulose , S. K. Malik

The present work reproduces the room temperature ferromagnetism by doping magnetic Mn atoms in diamagnetic ZnO. The ferromagnetic ordering is extended up to 640 K in mechanical milled Zn0.95Mn0.05O samples. The bulk and nanocrystalline…

Strongly Correlated Electrons · Physics 2009-03-11 R. N. Bhowmik , Asok Poddar , A. Saravanan

The magnetic properties of GdBaMn_{2}O_{5.0}, which exhibits charge ordering, are studied from 2 to 400 K using single crystals. In a small magnetic field applied along the easy axis, the magnetization M shows a temperature-induced reversal…

Materials Science · Physics 2009-11-13 A. A. Taskin , Yoichi Ando

Multiferroic perovskites that exhibit room temperature magnetization and polarization have immense potential in the next generation of magneto-electric and spintronic memory devices. In this work, the magnetic and ferroelectric properties…

The ferrimagnetic insulator Mn3Si2Te6, which features a Curie temperature Tc at 78 K and a delicate yet consequential magnetic frustration, exhibits colossal magnetoresistance (CMR) when the magnetic field is applied along the magnetic hard…

Strongly Correlated Electrons · Physics 2022-11-02 Feng Ye , Masaaki Matsuda , Zachary Morgan , Todd Sherline , Yifei Ni , Hengdi Zhao , G. Cao

Neutron diffraction measurements have been performed on a powder sample of BaMn2As2 over the temperature T range from 10 K to 675 K. These measurements demonstrate that this compound exhibits collinear antiferromagnetic ordering below the…

Superconductivity · Physics 2010-11-17 Yogesh Singh , M. A. Green , Q. Huang , A. Kreyssig , R. J. McQueeney , D. C. Johnston , A. I. Goldman

There has been tremendous research activity in the field of magneto-electric (ME) multiferroics after Kimura et al. [1] showed that antiferromagnetic and ferroelectric order coexist in orthorhom- bically distorted perovskite TbMnO3 and are…

Magnetic refrigeration at room-temperature is a technology that could potentially be more environmentally-friendly, efficient and affordable than traditional refrigeration. The search for suitable materials for magnetocaloric refrigeration…

Strongly Correlated Electrons · Physics 2019-03-13 C. Gauvin-Ndiaye , A. -M. S. Tremblay , R. Nourafkan

Hexagonal perovskite 15R-BaMnO2.99 with a ratio of cubic to hexagonal layers of 1/5 in the unit cell is an antiferromagnetic insulator that orders at a N\'eel temperature TN = 220 K. Here we report structural, magnetic, dielectric and…

Strongly Correlated Electrons · Physics 2010-11-11 O. B. Korneta , T. F. Qi , M. Ge , S. Parkin , L. E. DeLong , P. Schlottmann , G. Cao

We report a combined experimental and theoretical investigation of the layered antimonide PrMnSbO which is isostructural to the parent phase of the iron pnictide superconductors. We find linear resistivity near room temperature and Fermi…

We report magneto-dielectric properties of partially B-site ordered monoclinic Tb2CoMnO6 double perovskite thin film epitaxially grown by metalorganic aerosol deposition technique. Transmission electron microscopy and electron energy loss…

Strongly Correlated Electrons · Physics 2020-03-25 R. Mandal , M. Chandra , V. Roddatis , M. Tripathi , R. Rawat , R. J. Choudhary , V. Moshnyaga

We investigated the anisotropy of the magnetic and magnetocaloric properties of singlecrystalline double perovskite Tb2CoMnO6, which crystallizes in a monoclinic P21/n structure. Due to dissimilar magnetic anisotropy, the ferromagnetic…

Strongly Correlated Electrons · Physics 2018-12-17 J. Y. Moon , M. K. Kim , D. G. Oh , J. H. Kim , H. J. Shin , Y. J. Choi , N. Lee

Anomalous magnetic properties of the double perovskite ruthenates compound Sr2YRuO6 are reported here. Magnetization measurements as a function of temperature in low magnetic fields show clear evidence for two components of magnetic order…

Strongly Correlated Electrons · Physics 2010-09-21 Ravi P. Singh , C. V. Tomy

Polycrystalline samples of double perovskites Ba2BOsO6 (B = Sc, Y, In) were synthesized by solid state reactions. They adopt the cubic double perovskite structures (space group, Fm-3m) with ordered B and Os arrangements. Ba2BOsO6 (B = Sc,…

Strongly Correlated Electrons · Physics 2017-12-08 Hai L. Feng , Kazunari Yamaura , Liu Hao Tjeng , Martin Jansen

The search for oxide-based room-temperature ferromagnetism has been one of the holy grails in condensed matter physics. Room-temperature ferromagnetism observed in Nb-doped SrTiO3 single crystals is reported in this Rapid Communication. The…

Materials Science · Physics 2013-06-20 Z. Q. Liu , W. M. Lu , S. L. Lim , X. P. Qiu , N. N. Bao , M. Motapothula , J. B. Yi , M. Yang , S. Dhar , T. Venkatesan , Ariando

ZnO nanoparticles with Wurtzite structure were prepared by chemical methods at low temperature in aqueous solution. Nanoparticles are in the range from about 10 to 30 nm. Ferromagnetic properties were observed from 2 K to room temperature…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 R. Escudero , R. Escamilla

Double perovskites provide a unique opportunity to induce and control multiferroic behaviors in oxide systems. The appealing possibility to design materials with a strong coupling between the magnetization and the polarization fields may be…

Materials Science · Physics 2009-04-06 M. P. Singh , K. D. Truong , P. Fournier , P. Rauwel , E. Rauwel , L. P. Carignan , D. Menard

The ferroelectric nematic phase (NF) is a recently discovered phase of matter in which the orientational order of the conventional nematic liquid crystal state is augmented with polar order. Atomistic simulations suggest that the polar NF…

Soft Condensed Matter · Physics 2023-09-26 Charles Parton-Barr , Helen Gleeson , Richard Mandle

The coexistence of antiferromagnetic and ferromagnetic order at room temperature in single-phase van der Waals materials, particularly within the two-dimensional limit, has attracted significant research interest. Nonetheless, such…