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In the R1/2D1/2MnO3 manganites (R: rare earth, D: divalent cation), the structural phase transition at Tco is commonly interpreted as a concomitant charge and orbital ordering (CO/OO) process driven by a cooperative Jahn-Teller effect and…

Strongly Correlated Electrons · Physics 2007-05-23 A. Daoud-Aladine , J. Rodriguez-Carvajal , L. Pinsard-Gaudart , M. T. Fernandez-Diaz , A. Revcolevschi

Electronic structure of pulsed laser deposited epitaxial LaVO3 (LVO) thin film grown on LaAlO3 (001) (LAO) substrate, has been studied at room temperature and at 130 K, which is below the structural (141 K) and magnetic transition…

Strongly Correlated Electrons · Physics 2020-12-30 Anupam Jana , Rajamani Raghunathan , Ritu Rawat , R. J. Choudhary , D. M. Phase

We present temperature-, magnetic-field-, and pressure-dependent Raman scattering studies of single crystal Mn3O4, combined with temperature- and field-dependent x-ray diffraction studies, revealing the novel magnetostructural phases in…

Strongly Correlated Electrons · Physics 2015-05-28 M. Kim , X. M. Chen , X. Wang , C. S. Nelson , R. Budakian , P. Abbamonte , S. L. Cooper

The high-pressure behavior of monoclinic VO$_2$ is revisited by a combination of Raman spectroscopy and X-ray diffraction on a single crystal under hydrostatic conditions at room temperature. A soft mode is observed up to P$_c$ = 13.9(1)…

Strongly Correlated Electrons · Physics 2025-01-14 P. Bouvier , L. Bussmann , D. Machon , I. Breslavetz , G. Garbarino , P. Strobel , V. Dmitriev

The polycrystalline Sm2MgMnO6 (SMMO) was synthesized at 1173K by means of sol-gel technique. Rietveld refine-ment of X-ray diffraction (XRD) pattern confirmed the formation of a single phase monoclinic structure with space group P21/n. The…

Materials Science · Physics 2017-07-03 Moumin Rudra , Ritwik Maity , T. P. Sinha

We report a detailed high-resolution powder neutron diffraction investigation of the structural behaviour of the multiferroic hexagonal polymorph of YMnO3 between room temperature and 1403 K. The study was aimed at resolving previous…

Materials Science · Physics 2015-05-19 Alexandra S. Gibbs , Kevin S. Knight , Philip Lightfoot

The origin of the low-temperature ferromagnetic instability in YTiO3 driven by the interplay between lattice, orbital, spin, and charge degrees of freedom is on the background of lattice dynamics. We present a comprehensive study of…

Strongly Correlated Electrons · Physics 2022-02-16 N. N. Kovaleva , O. E. Kusmartseva , A. Maljuk

We present the single-crystalline x-ray diffraction study on the Ba4Ru3O10 consisting of the corner-shared Ru3O12 trimers. The crystal structure is re-determined from 78 to 300 K across an antiferromagnetic transition at 105 K. The…

Strongly Correlated Electrons · Physics 2013-10-18 Taichi Igarashi , Yoshio Nogami , Yannick Klein , Gwenaelle Rousse , Ryuji Okazaki , Hiroki Taniguchi , Yukio Yasui , Ichiro Terasaki

We present powder and single crystal X-ray diffraction data as evidence for a monoclinic distortion in the low spin (S=0) and intermediate spin state (S=1) of LaCoO3. The alternation of short and long bonds in the ab plane indicates the…

Strongly Correlated Electrons · Physics 2009-11-10 G. Maris , Y. Ren , V. Volotchaev , C. Zobel , T. Lorenz , T. T. M. Palstra

The temperature (T) dependent x-ray diffraction (XRD) and resistivity measurements of La0.175Pr0.45Ca0.375MnO3 (LPCMO) have been performed down to 2K to understand the structural and transport properties. From room temperature down to 220K,…

Materials Science · Physics 2016-06-22 Shivani Sharma , Aga Shahee , Kiran Singh , N. P. Lalla

Single crystal X-ray diffraction measurements were performed on one-dimensional mixed valence vanadium bronze $\beta$-SrV$_6$O$_{15}$ in which a metal-insulator transition exists at 170 K. Above 170 K the P2$_1$/a structure with zigzag…

Strongly Correlated Electrons · Physics 2009-11-10 Claire Sellier , Florent Boucher , Etienne Janod

The controversies about the structure of the true ground state of pseudorhombohedral compositions of Pb(ZrxTi1-x)O3 (PZT) are addressed using a 6% Sr2+ substituted sample with x=0.550. Sound velocity measurements reveal a phase transition…

We report a detailed high-temperature powder neutron diffraction investigation of the structural behavior of the multiferroic GaFeO3 between 296 and 1368 K. Temperature dependent neutron diffraction patterns do not show any appreciable…

Materials Science · Physics 2015-06-12 S. K. Mishra , R. Mittal , R. Singh , M. Zbiri , T. Hansen , H. Schober

The orthovanadate DyVO3 crystal, known to exhibit multiple structural, spin and orbital ordering transitions, is presently investigated on the basis of magnetization, heat capacity, resistivity, dielectric and polarization measurements. Our…

Strongly Correlated Electrons · Physics 2014-07-24 Q. Zhang , K. Singh , C. Simon , L. D. Tung , G. Balakrishnan , V. Hardy

The high-pressure crystal structure evolution of CH3NH3PbBr3 (MAPbBr3) perovskite has been investigated by single-crystal X-ray diffraction and synchrotron-based powder X-ray diffraction. Single-crystal X-ray diffraction reveals that the…

Full pattern Le-Bail refinement using x-ray powder diffraction profiles of Sr1-xCaxTiO3 for x=0.02, 0.04 in the temperature range 12 to 300 K reveals anomalies in the unit cell parameters at 170, 225 K due to an antiferrodistortive (cubic…

Materials Science · Physics 2015-05-13 Sanjay Kumar Mishra , Dhananjai Pandey

We report a comprehensive study of dc susceptibility, specific heat, neutron diffraction, and inelastic neutron scattering measurements on polycrystalline Ba3(Cr1-xVx)2O8 samples, where x=0, 0.06, 0.15, and 0.53. A Jahn-Teller structure…

Materials Science · Physics 2013-05-02 Tao Hong , L. Y. Zhu , X. Ke , V. O. Garlea , Y. Qiu , Y. Nambu , H. Yoshizawa , M. Zhu , G. E. Granroth , A. T. Savici , Zheng Gai , H. D. Zhou

The electronic structure of NdVO3, YVO3 has been investigated as a function of sample temperature using resonant inelastic soft x-ray scattering at the V L3-edge. Most of the observed spectral features are in good agreement with an atomic…

Strongly Correlated Electrons · Physics 2014-11-18 J. Laverock , B. Chen , A. R. H. Preston , D. Newby , L. F. J. Piper , L. D. Tung , G. Balakrishnan , P. -A. Glans , J. -H. Guo , K. E. Smith

The structural properties of LaCoO3 were studied by means of high-resolution neutron powder diffraction in the temperature range 5<T<1000 K. Changes of the Co+3 spin states in this temperature interval are shown to affect not only the unit…

Strongly Correlated Electrons · Physics 2009-11-07 Paolo G. Radaelli , Sang-Wook Cheong

Samarium doped BiFeO3 compounds having nano-size crystallites were prepared by the ethylene glycol assisted sol-gel synthesis method. X-ray diffraction and SEM measurements as well as Raman spectroscopy and FTIR experiments were used to…