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We have carried out collinear and non-collinear electronic structure calculations to investigate the structural, electronic and magnetic properties of isolated Cr atoms, dimers and compact trimers. We find that the Cr monomer prefers to…

Materials Science · Physics 2007-05-23 H. J. Gotsis , Nicholas Kioussis , D. A. Papaconstantopoulos

We have measured temperature dependencies of the electric resistance $R$ and upper critical magnetic field $H_{c2}$ of a magnetic superconductor Dy$_{0.6}$Y$_{0.4}$Rh$_{3.85}$Ru$_{0.15}$B$_4$. The measurements were made for different angles…

We determine the magnetic susceptibility of thermal QCD matter by means of first principles lattice simulations using staggered quarks with physical masses. A novel method is employed that only requires simulations at zero background field,…

High Energy Physics - Lattice · Physics 2020-07-29 Gunnar S. Bali , Gergely Endrődi , Stefano Piemonte

Whereas dc measurements of magnetic susceptibility, $\chi$, fail to distinguish between local and weak itinerant ferromagnets, radio-frequency (rf) measurements of $\chi$ in the ferromagnetic state show dramatic differences between the two.…

Strongly Correlated Electrons · Physics 2009-02-02 M. D. Vannette , R. Prozorov

Sigma-phase intermetallic compound of Fe54Cr46 was investigated using DC and AC magnetic susceptibility techniques. A clear-cut evidence was found that the sample orders magnetically at Tc=23.5 K and its ground magnetic state is constituted…

Materials Science · Physics 2015-05-26 S. M. Dubiel , M. I. Tsindlekht , I. Felner

The measurements of the 1st and the 3rd harmonics of the AC magnetic susceptibility, performed on melt grown YBCO samples as a function of the temperature and the external parameters (frequency and amplitude of AC magnetic field, intensity…

Superconductivity · Physics 2015-06-24 Maria Giuseppina Adesso , Massimiliano Polichetti , Sandro Pace

Magnetization measurements and time-of-flight neutron powder-diffraction studies on the high-temperature (300--980 K) magnetism and crystal structure (321--1200 K) of a pulverized YCrO$_3$ single crystal have been performed.…

Strongly Correlated Electrons · Physics 2021-11-04 Yinghao Zhu , Si Wu , Bao Tu , Shangjian Jin , Ashfia Huq , Joerg Persson , Haoshi Gao , Defang Ouyang , Zhubing He , Dao-Xin Yao , Zikang Tang , Hai-Feng Li

We investigate the magnetic behavior and critical exponents of quaternary CoFeV$_{0.8}$Mn$_{0.2}$Si Heusler alloy to understand the interactions across the Curie temperature ($T_{\rm C}$). The Rietveld refinement of the x-ray diffraction…

Materials Science · Physics 2023-10-04 Guru Dutt Gupt , P. D. Babu , R. S. Dhaka

We report the results of low-temperature measurements of the specific heat Cp(T), ac susceptibility chi(T) and 23Na nuclear magnetic resonance NMR of Na2V3O7. At liquid He temperatures Cp(T)/T exhibits broad field-dependent maxima, which…

Strongly Correlated Electrons · Physics 2009-11-11 J. L. Gavilano , E. Felder , D. Rau , H. R. Ott , P. Millet , F. Mila , T. Cichorek , A. C. Mota

We study the magnetic response due to neutral solitons induced by disorder in polymer materials. We account for interchain interactions, which, if sufficiently strong, result in a bond-ordered phase, in which the neutral solitons are bound…

Soft Condensed Matter · Physics 2009-10-31 Marc Thilo Figge , Maxim Mostovoy , Jasper Knoester

We report the results of ac and dc magnetic susceptibility (chi), heat-capacity (C), isothermal magnetization and isothermal remanent magnetization measurements on the compound, Sr3CuRhO6, crystallizing in a K4CdCl6-derived monoclinic…

Strongly Correlated Electrons · Physics 2007-05-23 E. V. Sampathkumaran , Niharika Mohapatra , Sudhindra Rayaprol , Kartik K Iyer

We report measurements of the magnetic susceptibility of twinned single crystals of YBa$_{2}$Cu$_{3}$O$_{6+x}$ from just above their superconducting transition temperatures to 300 K with magnetic fields of up to 5 T applied parallel and…

Superconductivity · Physics 2016-09-21 I. Kokanović , J. R. Cooper

The chain-like organic compounds with conjugated structure have the potential to become high temperature superconductors. We examine this idea by choosing p-quinquephenyl with five phenyl rings connected in para position. The dc magnetic…

Superconductivity · Physics 2018-01-25 Ge Huang , Ren-Shu Wang , Xiao-Jia Chen

In 2016, we reported a single-ion magnet [Dy(bbpen)Br] with an energy barrier over 1000 K. Here a dimeric [Dy2(mu-CO3)(bbpen)2(H2O)].H2O.CH3OH (1) and a trimeric [Dy3(mu3-CO3)(bppen)3](CF3SO3).H2O (2) single-molecule magnets (SMMs) were…

Materials Science · Physics 2018-07-17 Guang Lu , Yan-Cong Chen , Si-Guo Wu , Guo-Zhang Huang , Jun-Liang Liu , Zhao-Ping Ni , Ming-Liang Tong

Polycrystalline CeGe is investigated by means of DC and AC susceptibility, non-linear DC susceptibility, electrical transport and heat capacity measurements in the low temperature regime. This compound shows two peaks at low magnetic field…

Strongly Correlated Electrons · Physics 2019-03-29 Karan Singh , K. Mukherjee

A key parameter for the low-temperature magnetic coupling of in dinuclear lanthanide single-molecule magnets (SMMs) is the barrier $U_{FA}$ resulting from the exchange and dipole interactions between the two $4f$ moments. Here we extend the…

The magnetic properties of ThCr_2Si_2-type single crystals ACo_2Se_2 (A = K, Rb and Cs) have been investigated by magnetic susceptibility and isothermal magnetization measurements at various temperatures. The ferromagnetic phase transition…

Superconductivity · Physics 2013-08-15 Jinhu Yang , Bin Chen , Hangdong Wang , Qianhui Mao , Masaki Imai , Kazuyoshi Yoshimura , Minghu Fang

Magnetic dynamics of a bulk ferromagnet, a new single crystalline compound Co7(TeO3)4Br6, was studied by ac susceptibility and the related techniques. Very large Arrhenius activation energy of 17.2 meV (201 K) and long attempt time…

Materials Science · Physics 2011-09-20 M. Prester , I. Zivkovic , D. Drobac , V. Surija , D. Pajic , H. Berger

The magnetic and electronic properties of Sr1-xLaxRuO3 were studied by means of dc-magnetization, ac-susceptibility, specific heat, and electrical resistivity measurements. The dc-magnetization and ac-susceptibility measurements have…

Strongly Correlated Electrons · Physics 2014-05-29 Ikuto Kawasaki , Makoto Yokoyama , Suguru Nakano , Kenji Fujimura , Naoaki Netsu , Hirofumi Kawanaka , Kenichi Tenya

We report the a.c. susceptibility study of Dy_xTb_{2-x}Ti_2O_7 with x in [0, 2]. In addition to the single-ion effect at Ts (single-ion effect peak temperature) corresponding to the Dy3+ spins as that in spin ice Dy_2Ti_2O_7 and a possible…

Materials Science · Physics 2015-03-13 Hui Xing , Mi He , Chunmu Feng , Hanjie Guo , Hao Zeng , Zhu-An Xu