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Related papers: Multiple spin-flop phase diagram of BaCu2Si2O7

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In this work we have investigated the orthorhombic to tetragonal phase transition in the Ba2Cu3O4Cl2 compound. This transition was observed by X-ray powder diffractometry carried out in samples heat treated between 700 and 750OC and also in…

Materials Science · Physics 2007-05-23 M. S. da Luz , C. A. M. dos Santos , B. Ferreira , A. J. S. Machado

Critical properties of the generalized spin-S magnetic binary alloys represented by $A_{c}B_{1-c}$ have been investigated within the framework of EFT. By inspecting the evolution of the phase diagrams with the concentration for several spin…

Statistical Mechanics · Physics 2020-11-26 Gülşen Karakoyun , Ümit Akıncı

The laminar perovskite Ca3Ru2O7 naturally forms ferromagnetic double-layers of alternating moment directions, as in the spin-valve superlattices. The mechanism of huge magnetoresistive effect in the material has been controversial due to a…

Strongly Correlated Electrons · Physics 2008-06-27 Wei Bao , Z. Q. Mao , Z. Qu , J. W. Lynn

The magnetic phase diagram of the chiral magnet Cu$_2$OSeO$_3$ has been investigated by dc magnetisation and ac susceptibility over a very large frequency range from 0.1 Hz up to 1 kHz and temperatures below 50 K. Qualitatively different…

Strongly Correlated Electrons · Physics 2016-11-21 F. Qian , H. Wilhelm , A. Aqeel , T. T. M. Palstra , A. J. E. Lefering , E. H. Brück , C. Pappas

La2Ni7 is an intermetallic compound that is thought to have itinerant magnetism with a small moment ordering below 65 K. A recent study of single crystal samples by Ribeiro et. al. [Phys. Rev. B 105, 014412 (2022)] determined detailed…

Strongly Correlated Electrons · Physics 2023-07-04 John M. Wilde , Aashish Sapkota , Wei Tian , Sergey L. Budko , Raquel A. Ribeiro , Andreas Kreyssig , Paul C. Canfield

We report the experimental observation of spin reorientation in the double perovskite Ho$_2$FeCoO$_6$. The magnetic phase transitions in this compound are characterized and studied through magnetization and specific heat, and the magnetic…

Magnetization measurements were performed on two sigma-phase samples of Fe(100-x)V(x) (x=35.5, 34.1) vs. temperature, T, and in DC magnetic field, of various amplitudes. Using three characteristic temperatures, magnetic phase diagrams in…

Strongly Correlated Electrons · Physics 2016-12-28 M. Sikora , S. M. Dubiel

The compound BaCuSi2O6 is a quantum magnet with antiferromagnetic dimers of S = 1/2 moments on a quasi-2D square lattice. We have investigated its spin dynamics by inelastic neutron scattering experiments on single crystals with an energy…

Strongly Correlated Electrons · Physics 2008-04-24 Ch. Rüegg , D. F. McMorrow , B. Normand , H. M. Ronnow , S. E. Sebastian , I. R. Fisher , C. D. Batista , S. Gvasaliya , Ch. Niedermayer , J. Stahn

We present a combined high-resolution x-ray diffraction and x-ray resonant magnetic scattering (XRMS) study of as-grown BaFe2As2. The structural/magnetic transitions must be described as a two-step process. At T_S = 134.5 K we observe the…

Our measured dielectric constant and mechanical response of multiferroic BiFeO3 indicate four phase transitions below room temperature. Features correlate with those reported at 50K (from a peak in the zero-field-cooled magnetic…

Materials Science · Physics 2008-06-23 S. A. T. Redfern , C. Wang , J. W. Hong , G. Catalan , J. F. Scott

We investigate the magnetization dynamics of $TmFeO_3$ single crystals across the spin-reorientation phase transition using broadband microwave absorption spectroscopy up to 87.5 GHz. Temperature- and magnetic-field-dependent…

Single-crystalline UAu$_2$Si$_2$ has been grown by a floating-zone melting method, and its magnetic, thermal and transport properties have been investigated through measurements of magnetization, specific heat and electrical resistivity to…

Noncollinear metallic antiferromagnets, with their rapid spin dynamics, efficient spin transport, and distinctive spin textures, play a pivotal role in advancing the field of spintronics. In this study, we report a comprehensive…

We present first specific-heat data of the alloy Yb(Rh_(1-x)Co_x)_2Si_2 at intermediate Co-contents x=0.18, 0.27, and 0.68. The results already point to a complex magnetic phase diagram as a function of composition. Co-doping of YbRh_2Si_2…

Strongly Correlated Electrons · Physics 2010-03-03 C. Klingner , C. Krellner , C. Geibel

Magnetic and dielectric properties of \aa kermanite Ca$_2$CoSi$_2$O$_7$ single crystals were investigated in pulsed high magnetic fields. In magnetic fields along the $c$ axis, this material shows a magnetization plateau in a wide range of…

Strongly Correlated Electrons · Physics 2015-06-22 Mitsuru Akaki , Hideki Kuwahara , Akira Matsuo , Koichi Kindo , Masashi Tokunaga

Ab initio calculations show an antiferromagnetic-ferromagnetic phase transition around 9-10 GPa and a magnetic anomaly at 12 GPa in BiFeO3. The magnetic phase transition also involves a structural and insulator-metal transition. The G-type…

Materials Science · Physics 2012-12-20 Hong-Jian Feng

Motivated by the recently discovered high-$T_c$ bilayer nickelate superconductor La$_3$Ni$_2$O$_7$, we comprehensively research a bilayer $2\times2\times2$ cluster for different electronic densities $n$ by using the Lanczos method. We also…

Strongly Correlated Electrons · Physics 2025-07-03 Ling-Fang Lin , Yang Zhang , Nitin Kaushal , Gonzalo Alvarez , Thomas A. Maier , Adriana Moreo , Elbio Dagotto

We report magnetization data for several titanium pyrochlore systems measured down to 0.5 K. The measurements, performed on single crystal samples in fields of up to 7 T, have captured the essential elements of the previously reported phase…

Strongly Correlated Electrons · Physics 2014-08-18 O. A. Petrenko , M. R. Lees , G. Balakrishnan

We identify a new regime of decay of the irreversible magnetization in clean Bi$_{2}$Sr$_{2}$CaCu$_{2}$O$_{8}$ crystals, at induction values close to the ``second peak field'' at which the bulk critical current density steeply increases. A…

Superconductivity · Physics 2015-06-25 M. Konczykowski , C. J. van der Beek , S. Colson , M. V. Indenbom , P. H. Kes , Y. Platiel , E. Zeldov

In-field DC and AC magnetization measurements were carried out on a sigma-phase Fe55Re45 intermetallic compound aimed at determination of the magnetic phase diagram in the H-T plane. Field cooled, M_FC, and zero-field cooled, M_ZFC, DC…

Strongly Correlated Electrons · Physics 2020-01-08 Stanislaw M. Dubiel , Israel Felner , Menahem I. Tsindlekht