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相关论文: Antiferromagnetic ground state in the MnGa$_4$ int…

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We report powder and single crystal neutron diffraction measurements of the magnetic order in AMnBi2 (A = Sr and Ca), two layered manganese pnictides with anisotropic Dirac fermions on a Bi square net. Both materials are found to order at…

强关联电子 · 物理学 2014-08-20 Y. F. Guo , A. J. Princep , X. Zhang , P. Manuel , D. Khalyavin , I. I. Mazin , Y. G. Shi , A. T. Boothroyd

We report the first electron paramagnetic resonance studies of single crystals and powders of Pr_{0.6}Ca_{0.4}MnO_{3} in the 300-4.2 K range, covering the charge ordering transition at ~ 240 K and antiferromagnetic transition (T_N) at ~ 170…

强关联电子 · 物理学 2009-10-31 Rajeev Gupta , Janhavi P. Joshi , S. V. Bhat , A. K. Sood , C. N. R. Rao

We measured the electrical resistivity, AC magnetic susceptibility, and specific heat of the cubic double perovskite Ba$_2$MgReO$_6$ under pressure. The application of pressure leads to a gradual increase in the transition temperature to…

强关联电子 · 物理学 2021-12-08 Hiroto Arima , Yoshiaki Oshita , Daigorou Hirai , Zenji Hiroi , Kazuyuki Matsubayashi

Although a cubic phase of Mn$_3$Ga with an antiferromagnetic order has been theoretically predicted, it has not been experimentally verified in a bulk or film form. Here, we report the structural, magnetic, and electrical properties of…

We systematically investigate the structural, electronic and magnetic properties of Mn$_n$ clusters ($n =$ 2$-$20) within the {\it ab-initio} pseudopotential plane wave method using generalized gradient approximation for the…

原子与分子团簇 · 物理学 2008-06-12 Mukul Kabir , Abhijit Mookerjee , D. G. Kanhere

An unusual successive phase transition from superconducting (SC) to antiferromagnetic (AF) phases was discovered via ^{75}As and ^{27}Al nuclear magnetic resonance (NMR) in (Fe_2As_2)(Ca_6(Al, Ti)_4O_y) with four (Al, Ti)O layers…

超导电性 · 物理学 2011-08-12 T. Nakano , N. Fujiwara , S. Tsutsumi , H. Ogino , K. Kishio , J. Shimoyama

UNi4B exhibits unusual properties and, in particular, a unique antiferromagnetic arrangement involving only 2/3 of the U sites. Based on the low temperature behavior of this compound, we propose that the remaining 1/3 U sites are…

强关联电子 · 物理学 2009-10-31 Claudine Lacroix , Benjamin Canals , M. D. Nunez-Regueiro

The intermetallic compound SmMn$_2$Ge$_2$, displaying multiple magnetic phase transitions, is being investigated in detail for its magnetization behavior near the 145 K first order ferromagnetic to antiferromagnetic transition occuring on…

Magnetism in the orthorhombic metal CaFe$_4$As$_3$ was examined through neutron diffraction for powder and single crystalline samples. Incommensurate (${\bm q}_{\rm m}\approx (0.37-0.39)\times{\bm b}^{\ast}$) and predominantly…

C14 Nb(Fe89.4Al10.6)2 Laves phase intermetallic compound was investigated by DC magnetization (M) measurements performed in the temperature (T) interval of 20 to 175 K,under an applied magnetic field (H) ranging between 50 and 1250 Oe.…

材料科学 · 物理学 2019-12-25 Stanisław M. Dubiel , Israel Felner

We report a study of the low-temperature high-pressure phase diagram of the intermetallic compound PrCu$_2$, by means of molecular-field calculations and $^{63,65}$Cu nuclear-quadrupole-resonance (NQR) measurements under pressure. The…

强关联电子 · 物理学 2009-11-13 A. Sacchetti , M. Weller , H. R. Ott , Y. Onuki

Structural, electronic, and magnetic properties of modified cubic spinel compound LiNi$_{0.5}$Mn$_{1.5}$O$_{4}$ are studied via x-ray diffraction, resistivity, DC and AC magnetization, heat capacity, neutron diffraction, $^7$Li nuclear…

材料科学 · 物理学 2020-12-02 S. S. Islam , Vikram Singh , K Somesh , Prashanta K Mukharjee , A. Jain , S. M. Yusuf , R. Nath

Magnetic structure of single crystalline TmB4 has been studied by magnetization, magnetoresistivity and specific heat measurements. A complex phase diagram with different antiferromagnetic (AF) phases was observed below TN1 = 11.7 K.…

强关联电子 · 物理学 2007-12-05 S. Gabani , S. Matas , P. Priputen , K. Flachbart , K. Siemensmeyer , E. Wulf , A. Evdokimova , N. Shitsevalova

MnSiN$_2$ is a transition metal nitride with Mn and Si ions displaying an ordered distribution on the cation sites of a distorted wurtzite-derived structure. The Mn$^{2+}$ ions reside on a 3D diamond-like covalent network with strong…

We report the observation of a field-induced transformation from the easy-plane antiferromagnetic structure to the easy-axis ferrimagnetic structure in a single crystal of TbFe_4.4Al_7.6 (tetragonal ThMn_12 structure) at 5 K. Such a…

材料科学 · 物理学 2009-11-07 N. P. Duong , E. Brueck , P. E. Brommer , A. de Visser , F. R. de Boer , K. H. J. Buschow

We report ^{75}As nuclear magnetic resonance studies on an underdoped single-crystal Ba0.77K0.23Fe2As2 with Tc = 16.5 K. Below T_N = 46 K, the NMR peaks for H//c split and those for H //a shift to higher frequencies, which indicates that an…

超导电性 · 物理学 2012-11-07 Z. Li , R. Zhou , D. L. Sun , J. Yang , C. T. Lin , Guo-qing Zheng

The magnetic state of the single-component molecular compound, [Cu(tmdt)$_{2}$], is investigated by means of $^{1}$H-NMR. An abrupt spectral broadening below 13 K and a sharp peak in nuclear spin-lattice relaxation rate, $T_{1}^{-1}$, at 13…

强关联电子 · 物理学 2012-05-31 Rina Takagi , Kazuya Miyagawa , Kazushi Kanoda , Biao Zhou , Akiko Kobayashi , Hayao Kobayashi

The quaternary full Heusler compound Mn(2-x)Co(x)VAl with x = 1 is predicted to be a half-metallic antiferromagnet. Thin films of the quaternary compounds with x = 0...2 were prepared by DC and RF magnetron co-sputtering on heated MgO (001)…

材料科学 · 物理学 2011-07-01 Markus Meinert , Jan-Michael Schmalhorst , Günter Reiss , Elke Arenholz

The chain-like system Ba_{3}Cu_{3}Sc_4O_{12} has potentially interesting magnetic properties due to the presence of Cu^{2+} and a structure-suggested low-dimensionality. We present magnetization M versus magnetic field H and temperature T,…

The structural and magnetic properties of Ge0.5Mn0.5Co2O4 (GMCO) have been investigated in detail utilizing neutron powder diffraction (NPD), x-ray diffraction (XRD), DC magnetometry, and heat capacity analysis and compared with GeCo2O4.…

强关联电子 · 物理学 2024-07-02 Pooja Jain , Benny Schundelmier , Chin-Wei Wang , Poonam Yadav , Kaya Wei , N. P. Lalla , Shivani Sharma