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Multiferroic TbMnO3 is investigated using x-ray diffraction in high magnetic fields. Measurements on first and second harmonic structural reflections due to modulations induced by the Mn and Tb magnetic order are presented as function of…

Strongly Correlated Electrons · Physics 2008-07-29 J. Strempfer , B. Bohnenbuck , I. Zegkinoglou , N. Aliouane , S. Landsgesell , M. v. Zimmermann , D. N. Argyriou

A model of two-species bosons moving on the sites of a lattice is studied at nonzero temperature, focusing on magnetic order and superfluid-insulator transitions. Firstly, Landau theory is used to find the general structure of the phase…

Statistical Mechanics · Physics 2009-05-10 Stephen Powell

In complex electronic materials, coupling between electrons and the atomic lattice gives rise to remarkable phenomena, including colossal magnetoresistance and metal-insulator transitions. Charge-ordered phases are a prototypical…

Structural and magnetic properties of the CoMn$_{0.88}$Cu$_{0.12}$Ge compound have been investigated using X-ray diffraction (XRD) and differential scanning calorimetry (DSC) accompanied with investigation of magnetic properties under…

The complex magnetic transitions and superconductivity of HoNi2B2C were studied via the dependence of the heat capacity on temperature and in-plane field angle. We provide an extended, comprehensive magnetic phase diagram for B // [100] and…

Superconductivity · Physics 2009-11-10 Tuson Park , M. B. Salamon , Eun Mi Choi , Heon Jung Kim , Sung-Ik Lee

(TMTTF)2AsF6 undergoes two phase transitions upon cooling from 300 K. At Tco=103 K a charge-ordering (CO) occurs, and at Tsp(B=9 T)=11 K the material undergoes a spin-Peierls (SP) transition. Within the intermediate, CO phase, the charge…

Strongly Correlated Electrons · Physics 2009-11-07 F. Zamborszky , W. Yu , W. Raas , S. E. Brown , B. Alavi , C. A. Merlic , A. Baur

Magnetic and magnetocaloric properties of Y$_{1-x}$Gd$_{x}$Co$_{2}$ compounds, where x = 0.2, 0.4, 0.6, 0.8 and 1.0, were investigated experimentally and theoretically. Crystal structures were characterized by X-ray diffraction (Rietveld…

The low-temperature magnetic phase diagram of the multiferroic system FeTe$_2$O$_5$Br down to 300 mK and up to 9 T is presented. Short-range magnetic correlations within the crystal layers start to develop already at $\sim$50 K, i.e., far…

Strongly Correlated Electrons · Physics 2015-05-19 M. Pregelj , A. Zorko , O. Zaharko , Z. Kutnjak , M. Jagodič , Z. Jagličić , H. Berger , M. de Souza , C. Balz , M. Lang , D. Arčon

Two terbium tellurides, TbTe3 and Tb2Te5, were studied by means of thermodynamics, ultrafast pump-probe spectroscopy and torque magnetometry. While crystal structure and some physical properties of TbTe3 were established previously, the…

We studied in detail the low temperature/high magnetic field phases of URu$_{2}$Si$_{2}$ single crystals with specific heat, magnetocaloric effect, and magnetoresistance in magnetic fields up to 45 T. Data obtained down to 0.5 K, and…

Strongly Correlated Electrons · Physics 2009-11-07 M. Jaime , K. H. Kim , G. Jorge , S. McCall , J. A Mydosh

We present magnetization measurements on polycrystalline $\beta$-Li$_2$IrO$_3$ under hydrostatic pressures up to 3~GPa and construct the temperature-pressure phase diagram of this material. Our data confirm that magnetic order breaks down…

Strongly Correlated Electrons · Physics 2021-10-26 Bin Shen , Anton Jesche , Maximilian L. Seidler , Friedrich Freund , Philipp Gegenwart , Alexander A. Tsirlin

The magnetic structures and the magnetic phase transitions in the Mn-doped orthoferrite TbFeO$_3$ studied using neutron powder diffraction are reported. Magnetic phase transitions are identified at $T^\mathrm{Fe/Mn}_N \approx$ 295~K where a…

Strongly Correlated Electrons · Physics 2016-02-17 Harikrishnan S. Nair , Tapan Chatterji , C. M. N. Kumar , T. Hansen , Hariharan Nhalil , Suja Elizabeth , A. M. Strydom

The effect of an external (electro)magnetic field on the finite temperature transition of QCD is studied. We generate configurations at various values of the quantized magnetic flux with $N_f=2+1$ flavors of stout smeared staggered quarks,…

High Energy Physics - Lattice · Physics 2012-02-29 G. S. Bali , F. Bruckmann , G. Endrodi , Z. Fodor , S. D. Katz , S. Krieg , A. Schafer , K. K. Szabo

Recently, the mixed transition metal oxides of the form Li(Ni1-y-zCoyMnz)O2, have become the center of attention as promising candidates for novel battery material. These materials have also revealed very interesting magnetic properties due…

Strongly Correlated Electrons · Physics 2013-07-30 J. Magnus Wikberg , Martin Mansson , Mohammed Dahbi , Kazuya Kamazawa , Jun Sugiyama

Dc and ac-magnetic susceptibility ($\chi$), specific heat ($C_\mathrm{P}$), electrical resistivity ($\rho$) and magnetoresistance measurements performed on the new polycrystalline compound $\mathrm{Gd_2AgSi_3}$, crystallizing in the…

Materials Science · Physics 2021-05-05 Baidyanath Sahu

In the manganite Nd0.5Ca0.5MnO3, charge ordering occurs at much higher temperature than the antiferromagnetic order (TCO=250K,TN=160K). The magnetic behavior of the phase TN<T<TCO is puzzling: its magnetization and susceptibility are…

Strongly Correlated Electrons · Physics 2016-08-31 F. millange , S. de Brion , G. Chouteau

The co-occurrence of phase transitions with local and global order parameters, such as the entangled magnetization and topological invariant, is attractive but has been seldom realized experimentally. Here, by using high-pressure in-situ…

Magnetization, magnetoresistance, and magnetodielectric measurements have been carried out on the half doped charge ordered manganite, Pr_0.5Ca_0.5MnO_3. The low temperature state is found to be strongly dependent on the oxygen…

Strongly Correlated Electrons · Physics 2009-04-29 A. Karmakar , S. Majumdar , A. K. Singh , S. Patnaik , S. Giri

Ordered intermetallics are long believed to be the final products of the aging of U-Nb solid solutions at low temperatures, a crucial property for the practical applications of this alloy in engineering and industry. However, such…

Materials Science · Physics 2023-03-28 Xiao L. Pan , Hao Wang , Lei L. Zhang , Yu F. Wang , Xiang R. Chen , Hua Y. Geng , Ying Chen

We report the observation of multiple magnetic transitions in single crystals of EuPtAs using magnetization, transport, and thermodynamic measurements. EuPtAs crystallizes in the noncentrosymmetric tetragonal LaPtSi-type structure (space…

Materials Science · Physics 2021-12-01 W. Xie , S. S. Luo , H. Su , X. Y. Zheng , Z. Y. Nie , M. Smidman , T. Takabatake , H. Q. Yuan
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