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Related papers: Magnetic structure of CuCrO2: a single crystal neu…

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Polarized and unpolarized neutron diffraction studies have been carried out on single crystals of the coupled spin tetrahedra systems Cu2Te2O5X2 (X=Cl, Br). A model of the magnetic structure associated with the propagation vectors k'Cl ~…

Recent studies have reported the existence of an epitaxially-stabilized tetragonal-like ('T-like') monoclinic phase in BiFeO3 thin-films with high levels of compressive strain. While their structural and ferroelectric properties are…

The dimensionality of the electronic and magnetic structure of a given material is generally predetermined by its crystal structure. Here, using elastic and inelastic neutron scattering combined with magnetization measurements, we find…

The crystal and magnetic structures of stoichiometric ZnCr2Se4 have been investigated using synchrotron X-ray and neutron powder diffraction, muon spin relaxation (muSR) and inelastic neutron scattering. Synchrotron X-ray diffraction shows…

Strongly Correlated Electrons · Physics 2017-04-12 P. Zajdel , W-Y. Li , W. Van Beek , A. Lappas , A. Ziolkowska , S. Jaskiewicz , C. Stock , M. A. Green

Motivated by the recent synthesis of Ba$_2$CuO$_{3+\delta}$ (BCO), a high temperature superconducting cuprate with putative $d_{3z^2-r^2}$ ground state symmetry, we investigated its electronic structure by means of Cu $L_3$ x-ray absorption…

Hexagonal rare-earth ferrite RFeO$_3$ family represents a unique class of multiferroics exhibiting weak ferromagnetism, and a strong coupling between magnetism and structural trimerization is predicted. However, the hexagonal structure for…

The magnetic structure of the heavy fermion antiferromagnet CePt$_2$In$_7$ is determined using neutron diffraction. We find a magnetic wave vector $\mathbf{q}_M = (1/2,1/2,1/2)$, which is temperature independent up to $T_N =$ 5.5 K. A…

Strongly Correlated Electrons · Physics 2017-04-06 M. Raba , E. Ressouche , N. Qureshi , C. V. Colin , V. Nassif , S. Ota , Y. Hirose , R. Settai , P. Rodière , I. Sheikin

We report the multiferroic behaviour of MnWO$_4$, a magnetic oxide with monoclinic crystal structure and spiral long-range magnetic order. Based upon recent theoretical predictions MnWO$_4$ should exhibit ferroelectric polarization…

Strongly Correlated Electrons · Physics 2007-05-23 O. Heyer , N. Hollmann , I. Klassen , S. Jodlauk , L. Bohaty , P. Becker , J. A. Mydosh , T. Lorenz , D. Khomskii

The resistivity in the ferromagnetic state of flux-grown La_{2/3}(Pb,Ca)_{1/3}MnO_3 single crystals, measured in magnetic fields up to 7 T, reveals a strong quadratic temperature dependence at and above 50 K. At lower temperatures, this…

Strongly Correlated Electrons · Physics 2009-10-30 M. Jaime , P. Lin , M. B Salamon , P. Han

Using single crystal neutron scattering we show that the magnetic structure Ni$_3$TeO$_6$ at fields above 8.6 T along the $c$ axis changes from a commensurate collinear antiferromagnetic structure with spins along c and ordering vector…

This paper describes the low temperature nuclear and magnetic structures of La2O2Se2.Fe2O by analysis of X-ray and neutron diffraction data. The material has been demonstrated to order antiferromagnetically at low temperatures, with TN…

Materials Science · Physics 2010-06-28 David G. Free , John S. O. Evans

We study the multiferroic properties in the distorted tetrahedral quasi-one dimensional spin system Cu$_3$Mo$_2$O$_9$, in which the effects of the low dimensionality and the magnetic frustration are expected to appear simultaneously. We…

Strongly Correlated Electrons · Physics 2015-06-03 T. Hosaka , S. Hachiuma , H. Kuroe , T. Sekine , M. Hase , K. Oka , T. Ito , H. Eisaki , M. Fujisawa , S. Okubo , H. Ohta

We use neutron powder diffraction to investigate the magnetic and crystalline structure of Cr$_2$GaN. A magnetic phase transition is identified at $T \approx 170$ K, whereas no trace of structural transition is observed down to 6 K.…

We studied the crystal and magnetic structure of Ca2RuO4 by different diffraction techniques under high pressure. The observed first order phase transition at moderate pressure (0.5 GPa) between the insulating phase and the metallic high…

Strongly Correlated Electrons · Physics 2009-11-11 P. Steffens , O. Friedt , P. Alireza , W. G. Marshall , W. Schmidt , F. Nakamura , S. Nakatsuji , Y. Maeno , R. Lengsdorf , M. M. Abd-Elmeguid , M. Braden

The low temperature lattice structure and magnetic properties of Co$_{2.75}$Fe$_{0.25}$O$_4$ ferrite have been investigated using experimental results from synchrotron x-ray diffraction (SXRD), dc magnetization, ac susceptibility, neutron…

Strongly Correlated Electrons · Physics 2020-07-09 R. N. Bhowmik , Amit Kumar , A. K. Sinha , S. M. Yusuf

The structural and magnetic properties of YVO3, NdVO3 and TbVO3 were investigated by single-crystal and powder neutron diffraction. YVO3 shows a structural phase transition at 200 K from an orthorhombic structure with the space group Pbnm…

Strongly Correlated Electrons · Physics 2009-11-11 M. Reehuis , C. Ulrich , P. Pattison , B. Ouladdiaf , M. C. Rheinstadter , M. Ohl , L. P. Regnault , M. Miyasaka , Y. Tokura , B. Keimer

Fe pnictides and related materials have been a topic of intense research for understanding the complex interplay between magnetism and superconductivity. Here we report on the magnetic structure of SrMn$_{2}$As$_{2}$ that crystallizes in a…

Strongly Correlated Electrons · Physics 2016-12-13 Pinaki Das , N. S. Sangeetha , Abhishek Pandey , Zackery A. Benson , T. W. Heitmann , D. C. Johnston , A. I. Goldman , A. Kreyssig

A magneto-structural phase transition is investigated in single crystal CrN thin films grown by rf plasma molecular beam epitaxy on MgO(001) substrates. While still within the vacuum environment following MBE growth, $\it in-situ$…

In the quest of understanding significant variations in the physical, chemical and electronic properties of the novel functional materials, low temperature Synchrotron X-ray Diffraction (LT-SXRD) measurements on CTO (a type-II) and CMTO (a…

Materials Science · Physics 2016-08-09 Harishchandra Singh , A. K. Sinha , M. N. Singh , A. Upadhyay , Archna Sagdeo

We have carried out neutron diffraction and small angle neutron scattering measurements on a high quality single crystal of the cubic lacunar spinel multiferroic, GaV$_4$S$_8$, as a function of magnetic field and temperature to determine…

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