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We studied the crystal and magnetic structure of the La$_{1-x}$Ca$_{x}$MnO$_{3}$ compound for $(0.11\leq x\leq 0.175)$ using stoichiometric samples. For $x<0.13$ the system's ground state is insulating canted antiferromagnetic. For $0.13\le…

Strongly Correlated Electrons · Physics 2009-11-11 M. Pissas , I. Margiolaki , G. Papavassiliou , D. Stamopoulos , D. Argyriou

The structural phase diagram of the La1-xSrxMnO3 system in the compositional range 0.08 <= x <= 0.125 has been investigated by high-resolution synchrotron x-ray powder diffraction techniques between 20-600 K. Recent studies have reported…

Strongly Correlated Electrons · Physics 2009-10-31 D. E. Cox , T. Iglesias , E. Moshopoulou , K. Hirota , K. Takahashi , Y. Endoh

Heterostructuring provides different ways to manipulate the orbital degrees of freedom and to tailor orbital occupations in transition metal oxides. However, the reliable prediction of these modifications remains a challenge. Here, we…

Strongly Correlated Electrons · Physics 2022-04-27 P. Radhakrishnan , B. Geisler , K. Fürsich , D. Putzky , Y. Wang , G. Christiani , G. Logvenov , P. Wochner , P. A. van Aken , R. Pentcheva , E. Benckiser

We have recently predicted and subsequently verified experimentally by specific heat measurements that EuTiO3 undergoes a structural phase transition at elevated temperature TS = 282 K. The origin of the phase transition has been attributed…

Materials Science · Physics 2012-05-25 J. Köhler , R. Dinnebier , A. Bussmann-Holder

The crystal structure of SmFeAsO has been investigated by means of Rietveld refinement of high resolution synchrotron powder diffraction data collected at 300 K and 100 K. The compound crystallizes in the tetragonal P4/nmm space group at…

Superconductivity · Physics 2022-11-30 A. Martinelli , A. Palenzona , C. Ferdeghini , M. Putti , E. Emerich

We present temperature-dependent x-ray diffraction and temperature- and field-dependent Raman scattering studies of single crystal Mn3O4, which reveal the novel magnetostructural phases that evolve in the spinels due to the interplay…

Strongly Correlated Electrons · Physics 2015-05-14 M. Kim , X. M. Chen , E. Fradkin , P. Abbamonte , S. L. Cooper

Up to now the crystallographic structure of the magnetoelectric perovskite EuTiO3 was considered to remain cubic down to low temperature. Here we present high resolution synchrotron X-ray powder diffraction data showing the existence of a…

The structural and magnetic properties of the hexagonal four-layer form of SrMnO$_3$ have been investigated by combining magnetization measurements, electron diffraction and high-resolution synchrotron X-ray and neutron powder diffraction.…

Strongly Correlated Electrons · Physics 2007-05-23 A. Daoud-Aladine , C. Martin , L. C. Chapon , M. Hervieu , K. S. Knight , M. Brunelli , P. G. Radaelli

Rb2SnCu3F12 has been studied using synchrotron powder X-ray diffraction, powder neutron diffraction and single crystal X-ray diffraction at a range of temperatures (100 to 500 K). A broad but clear phase transition, possibly of re-entrant…

Strongly Correlated Electrons · Physics 2013-08-22 Lewis J. Downie , Stephen P. Thompson , Chiu C. Tang , Simon Parsons , Philip Lightfoot

Coatings of (Al1-xVx)2O3, with x ranging from 0 to 1, were deposited by pulsed DC reactive sputter deposition on Si(100) at a temperature of 550 {\deg}C. XRD showed three different crystal structures depending on V-metal fraction in the…

We investigate the importance of quantum orbital fluctuations in the orthorhombic and monoclinic phases of the Mott insulators LaVO3 and YVO3. First, we construct ab-initio material-specific t2g Hubbard models. Then, by using dynamical…

Strongly Correlated Electrons · Physics 2009-01-07 M. De-Raychaudhury , E. Pavarini , O. K. Andersen

We report a x-ray resonant diffraction study of the perovskite Pr0.6Ca0.4MnO3. At the Mn K-edge, this technique is sensitive to details of the electronic structure of the Mn atoms. We discuss the resonant x-ray spectra measured above and…

Strongly Correlated Electrons · Physics 2009-11-10 S. Grenier , J. P. Hill , Doon Gibbs , K. J. Thomas , M. v. Zimmermann , C. S. Nelson , V. Kiryukhin , Y. Tokura , D. Casa , T. Gog , C. Venkataraman

We report X-ray diffraction and magnetic susceptibility studies of the structural phase transition in $\alpha$-RuCl$_{3}$. By utilizing a single crystal sample with predominantly single twin domain, we show that $\alpha$-RuCl$_{3}$ goes…

Strongly Correlated Electrons · Physics 2023-11-08 Subin Kim , Ezekiel Horsley , Jacob P. C. Ruff , Beatriz D. Moreno , Young-June Kim

A sequence of structural transitions occurring in the quasi-one-dimensional (1D) 3d1 system BaVS3 at low temperature was investigated by high resolution synchrotron X-ray diffraction. The orthorhombic Cmc21 structure of the…

Strongly Correlated Electrons · Physics 2009-11-10 S. Fagot , P. Foury-Leylekian , S. Ravy , J. P. Pouget , M. Anne , G. Popov , M. V. Lobanov , M. Greenblatt

A complex magnetic order of the multiferroic compound Co3TeO6 has been revealed by neutron powder diffraction studies on ceramics and crushed single crystals. The compound adopts a monoclinic structure (s.g. C2/c) in the studied temperature…

Materials Science · Physics 2011-11-28 S. A. Ivanov , R. Tellgren , C. Ritter , P. Nordblad , R. Mathieu , G. Andre , N. V. Golubko , E. D. Politova , M. Weil

We utilize single-crystal neutron diffraction to study the $C2/m$ structure of potassium hydrogen carbonate (KHCO$_3$) and macroscopic quantum entanglement above the phase transition at $T_c = 318$ K. Whereas split atom sites could be due…

Other Condensed Matter · Physics 2008-07-10 François Fillaux , Alain Cousson , Matthias J. Gutmann

We have investigated the temperature dependence of the crystal structure of quasi-one-dimensional monoclinic BaIrO$_3$ using X-ray diffraction. Diffraction patterns were measured across a temperature range from 13 K to 300 K, with 5-degree…

Materials Science · Physics 2025-11-07 Jeong Jinwon , Chang Bin , Noh Han-Jin , Lee Seongsu

We report a temperature-dependent Raman scattering investigation of DyScO3 and GdScO3 single crystals from room temperature up to 1200 {\deg}C. With increasing temperature, all modes decrease monotonously in wavenumber without anomaly,…

Materials Science · Physics 2010-04-13 O. Chaix-Pluchery , D. Sauer , J. Kreisel

In order to explore the origin of the Metal-Insulator (M-I) transition, the precise crystal structures of the hole-doped Mott insulator system, Y1-XCaXTiO3 (x=0.37, 0.39 and 0.41), are studied for the temperature range between 20K and 300K…

Strongly Correlated Electrons · Physics 2009-11-07 K. Kato , E. Nishibori , M. Takata , M. Sakata , T. Nakano , K. Uchihira , M. Tsubota , F. Iga , T. Takabatake

In this work, we report the effects of calcination temperature on structural, dielectric, semiconducting and optical properties of YFeO3 nanoparticles prepared by a high energy ball milling process. The structural analysis of the X-ray…

Materials Science · Physics 2019-10-08 Chandra Bhal Singh , Dinesh Kumar , Narendra Kumar Verma , Akhilesh Kumar Singh