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Related papers: Magnetic properties and EPR spectrum of CsPr(MoO4)…

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We report on high-field magnetization, specific-heat and electron spin resonance (ESR) studies of the quasi-two-dimensional spin-1/2 Heisenberg antiferromagnet [Cu(pyz)2(HF2)]PF6. The frequency-field diagram of ESR modes below TN = 4.38 K…

Strongly Correlated Electrons · Physics 2011-03-10 E. Cizmar , S. A. Zvyagin , R. Beyer , M. Uhlarz , M. Ozerov , Y. Skourski , J. L. Manson , J. A. Schlueter , J. Wosnitza

The observed magnetic spin susceptibility of high-temperature superconductors such as La$_{2- x}$Sr$_x$CuO$_4$ increases when $x$ increases from zero, i.e. as one dopes away from half-filling. Recent Monte Carlo simulations of A. Moreo…

Condensed Matter · Physics 2009-10-22 Liang Chen , A. -M. S. Tremblay

We present a study of the magnetic susceptibility $\chi_{mol}$ under variable hydrostatic pressure on single crystals of Cs$_2$CuCl$_{4-x}$Br$_x$. This includes the border compounds \textit{x} = 0 and 4, known as good realizations of the…

Strongly Correlated Electrons · Physics 2019-10-23 S. K. Thallapaka , B. Wolf , E. Gati , L. Postulka , U. Tutsch , B. Schmidt , P. Thalmeier , F. Ritter , C. Krellner , Y. Li , V. Borisov , R. Valentí , M. Lang

The electronic structure and magnetism of chromia (corundum-type Cr2O3) are studied using full-potential first-principles calculations. The electronic correlations are included within the LSDA+U method. The energies of different magnetic…

Materials Science · Physics 2009-03-08 Siqi Shi , A. L. Wysocki , K. D. Belashchenko

Using microemulsion methods, CoO-Pt core-shell nanoparticles (NPs), with diameters of nominally 4 nm, were synthesized and characterized by high-resolution transmission electron microscopy (HRTEM) and a suite of x-ray spectroscopies,…

Mesoscale and Nanoscale Physics · Physics 2014-03-25 Adriana Zelenakova , Vladimir Zelenak , Stefan Michalik , Jozef Kovac , Mark W. Meisel

Radio-frequency (14.6 MHz) AC magnetic susceptibility, $\chi^{\prime}_{AC}$, of \dytio\ was measured using a self-oscillating tunnel-diode resonator. Measurements were made with the excitation AC field parallel to the superimposed DC…

Superconductivity · Physics 2022-01-10 S. Teknowijoyo , K. Cho , E. I. Timmons , M. A. Tanatar , J. W. Krizan , R. J. Cava , R. Prozorov

The $T$-dependence (2- 400 K) of the electron paramagnetic resonance (EPR), magnetic susceptibility, $\chi (T)$, and specific heat, $C_{v}(T)$, of the $normal$ antiferromagnetic (AFM) spinel ZnCr$_{2}$O$_{4}$ and the spin-glass (SG)…

We report electrical, magnetic, magnetodielectric and magnetoabsorption properties of a polycrystalline GaFeO3. The resistivity measurement shows that the sample is highly insulating below 200 K and the resistivity above 200 K obey the…

Materials Science · Physics 2015-05-14 V. B. Naik , R. Mahendiran

Magnetic excitations in cycloidal magnet LiCu$_2$O$_2$ are explored using THz absorption spectroscopy in magnetic fields up to 12 T. Below the spin ordering temperature we observe eight optically active transitions in the spin system of…

Strongly Correlated Electrons · Physics 2015-05-13 D. Hüvonen , U. Nagel , T. Rõõm , Y. J. Choi , C. L. Zhang , S. Park , S. -W. Cheong

63Cu nuclear magnetic resonance (NMR) spin-echo decay rate (T_2^{-1}) measurements are reported for the normal and superconducting states of a single crystal of Pr_{1.85}Ce_{0.15}CuO_{4-y} (PCCO) in a magnetic field B_0=9T over the…

Superconductivity · Physics 2009-11-10 F. Zamborszky , G. Wu , J. Shinagawa , W. Yu , H. Balci , R. L. Greene , W. G. Clark , S. E. Brown

We have investigated the ground state properties of polycrystalline CeCoAsO by means of magnetization, specific heat and solid state NMR. Susceptibility and specific-heat measurements suggest a ferromagnetic order at about,…

Strongly Correlated Electrons · Physics 2015-05-19 Rajib Sarkar , Anton Jesche , Cornelius Krellner , Chandan Mazumdar , Asok Poddar , Michael Baenitz , Cristoph Geibel

We present a neutron diffraction study of the magnetic structure of single crystal PrO2 under applied fields of 0-6 T. As the field is increased, changes are observed in the magnetic Bragg intensities. These changes are found to be…

Strongly Correlated Electrons · Physics 2009-11-10 C. H. Gardiner , A. T. Boothroyd , M. J. McKelvy , G. J. McIntyre , K. Prokes

In this study, ultrasonic measurements were performed on a single crystal of cubic PrNi$_2$Cd$_{20}$, down to a temperature of 0.02 K, to investigate the crystalline electric field ground state and search for possible phase transitions at…

The linear magnetoelectric effect was measured in 500 nm Cr2O3 films grown by rf sputtering on Al2O3 substrates between top and bottom thin film Pt electrodes. Magnetoelectric susceptibility was measured directly by applying an AC electric…

Materials Science · Physics 2016-05-25 P. Borisov , T. Ashida , T. Nozaki , M. Sahashi , D. Lederman

Electrical conductivity, thermopower and magnetic properties of Fe-intercalated Fe0.33VSe2 has been reported between 4.2K - 300K. We observe a first order transition in the resistivity of the sintered pellets around 160K on cooling. The…

Materials Science · Physics 2009-11-13 C. S. Yadav , A. K. Rastogi

We present the thermopower of EuCd2P2, a material which exhibits a large resistivity peak with significant magnetic field dependence in the temperature range of 10-25 K. In the same region we observe a highly unusual behavior of the…

We report on specific heat, high magnetic field transport and $ac-$susceptibility measurements on magnesium diboride single crystals. The upper critical field $H_{c2}$ for magnetic fields perpendicular and parallel to the Mg and B planes is…

Low temperature measurements of the ac magnetic susceptibility along the [110] direction of a single crystal of the dipolar spin ice material Ho2Ti2O7, in zero static field, are presented. While behavior that is qualitatively consistent…

Materials Science · Physics 2015-05-27 J. A. Quilliam , L. R. Yaraskavitch , H. A. Dabkowska , B. D. Gaulin , J. B. Kycia

The angular and temperature dependences of single crystal ESR spectra at X-band frequency of quasi 1D spin 1/2 antiferromagnetic zigzag chain system {\beta}-TeVO4 are reported. Two resonance components in the ESR spectrum have been…

Strongly Correlated Electrons · Physics 2013-11-25 Yu. Savina , A. Bludov , V. Pashchenko , S. Gnatchenko , A. Stepanov , P. Lemmens

Magneto-acoustic investigations of the frustrated triangular-lattice antiferromagnet Cs2CuCl4 were performed for the longitudinal modes c11 and c33 in magnetic fields along the a-axis. The temperature dependence of the sound velocity at…

Strongly Correlated Electrons · Physics 2016-09-21 P. T. Cong , L. Postulka , B. Wolf , N. van Well , F. Ritter , W. Assmus , C. Krellner , M. Lang