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We report high temperature synchrotron X-ray diffraction (SXRD), dc magnetization and current-voltage (I-V) characteristics for the samples of Co$_{2.75}$Fe$_{0.25}$O$_4$ ferrite. The material was prepared by chemical reaction of the Fe and…

Materials Science · Physics 2020-04-16 R. N. Bhowmik , P. D. Babu , A. K. Sinhac , Abhay Bhisikar

Here we investigate the temperature evolution of the structural parameters of a potential magnetoelectric material, MnTiO$_{3}$. The experimental results reveal interesting temperature dependence of the $c/a$ ratio and the Mn-O bonds which…

Strongly Correlated Electrons · Physics 2015-05-20 R. K. Maurya , Navneet Singh , S. K. Pandey , R. Bindu

Spin-phonon coupling originated from spin-lattice correlation depends upon different exchange interactions in transition metal oxides containing 3d magnetic ions. Spin-lattice coupling can influence the coupling mechanism in magnetoelectric…

Strongly Correlated Electrons · Physics 2021-09-09 P. Pal , Shalini Badola , P. K. Biswas , Ranjana R. Das , Surajit Saha , S. D. Kaushik , P. N. Vishwakarma , A. K. Singh

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

We report a soft x-ray resonant magnetic scattering study of the spin configuration in multiferroic thin films of Co$_{0.975}$Ge$_{0.025}$Cr$_2$O$_4$ (Ge-CCO) and CoCr$_2$O$_4$ (CCO), under low- and high-magnetic fields, from 0.2 T up to…

Strongly Correlated Electrons · Physics 2021-02-24 N Ortiz Hernandez , S Parchenko , J R L Mardegan , M Porer , E Schierle , E Weschke , M Ramakrishnan , M Radovic , J A Heuver , B Noheda , N Daffe , J Dreiser , H. Ueda , U Staub

The influence of an external static magnetic field (up to 480 mT)on the structural properties of EuTiO$_3$ (ETO) polycrystalline samples was examined by powder XRD at the Elettra synchrotron facilities in the temperature range 100-300K.…

Materials Science · Physics 2021-12-15 P. Pappas , M. Calamiotou , M. Polentarutti , G Bais , A. Bussmann-Holder , E. Liarokapis

Single-crystal synchrotron x-ray diffraction studies of CeFeAsO reveal strong anisotropy in the charge correlation lengths along or perpendicular to the in-plane antiferromagnetic (AFM) wave-vector at low temperatures, indicating an…

Superconductivity · Physics 2014-07-08 H. -F. Li , J. -Q. Yan , J. W. Kim , R. W. McCallum , T. A. Lograsso , D. Vaknin

The quasi-one-dimensional Ising spin chain system $\alpha$-CoV$_2$O$_6$ is considered to exhibit fascinating magnetic properties at lower temperatures. We comprehensively study magnetic properties and lattice dynamics using a combination of…

We report on the longitudinal magnetoresistance (MR) in thin metal films on an Ising-type antiferromagnetic insulator, Na5Co15.5Te6O36 (NCTO). Steep changes in the MR spectra with hysteresis were observed at spin-flip transitions driven by…

Strongly Correlated Electrons · Physics 2026-05-04 Hirotsugu Tagami , Takuya Kawada , Yuki Shiomi

Low-dimensional magnetic systems based on honeycomb lattices provide a promising platform for exploring exotic quantum phenomena that emerge from the intricate interplay of competing spin, orbital, lattice, and dipolar degrees of freedom.…

The electronic interlayer transport of the lightly doped antiferromagnet La1.79Eu0.2Sr0.01CuO4 has been studied by means of magneto-resistance measurements. The central problem addressed concerns the differences between the electronic…

Strongly Correlated Electrons · Physics 2011-10-28 M. Huecker

The current progress of materials science regarding multifunctional materials (MFM) has put forward the challenges to understand the microscopic origin of their properties. Most of such MFMs have magneto-elastic correlations. To investigate…

Materials Science · Physics 2015-06-02 Aga Shahee , Shivani Sharma , K. Singh , N. P. Lalla , P. Chaddah

We report NdCrTiO5 to be an unusual multiferroic material with large magnetic field dependent electric polarization. While magneto-electric coupling in this two magnetic sub-lattice oxide is well established, the purpose of this study is to…

Materials Science · Physics 2015-06-17 J. Saha , G. Sharma , S. Patnaik

We investigate the low-temperature spin dynamics of epitaxial lithium aluminum ferrite (LAFO) thin films using broadband ferromagnetic resonance (FMR) spectroscopy from 0.44 K to 68 K. The results reveal a crossover from conventional cubic…

Using inelastic x-ray scattering we have investigated lattice vibrations in a geometric frustrated system CdCr2O4 that upon cooling undergoes a spin-Peierls phase transition at TN = 7.8 K from a cubic and paramagnetic to a tetragonal and…

Strongly Correlated Electrons · Physics 2015-05-28 J. -H. Kim , M. Matsuda , H. Ueda , Y. Ueda , J. -H. Chung , S. Tsutsui , A. Baron , S. -H. Lee

Using resonant soft X-ray techniques we follow the magnetic behavior of a strained epitaxial film of CoCr2O4, a type-II multiferroic. The film is [110]-oriented, such that both the ferroelectric and ferromagnetic moments can coexist in…

Using x-ray powder diffraction technique at various temperatures and applied magnetic fields, we have studied the magnetostructural properties of Ce(Fe0.95Si0.05)2. The x-ray diffraction data establish quantitative relationships between…

Strongly Correlated Electrons · Physics 2010-05-21 Arabinda Haldar , Niraj K. Singh , Ya. Mudryk , K. G. Suresh , A. K. Nigam , V. K. Pecharsky

Results of high resolution x-ray diffraction experiments are presented for single crystals of the spin gap compound BaCuSi$_2$O$_6$ in the temperature range from 16 to 300 K. The data show clear evidence of a transition from the room…

Strongly Correlated Electrons · Physics 2009-11-11 E. C. Samulon , Z. Islam , S. E. Sebastian , P. B. Brooks , M. K. McCourt , J. Ilavsky , I. R. Fisher

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

Low-dimensional copper oxide lattices naturally manifest electronic states with strong short range quantum entanglement, which are known to lead to remarkable emergent material properties. However the nanometer scale many-body wavefunction…

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