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相关论文: Electron paramagnetic resonance study of ErSc2NC80

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We present and compare the results of temperature-dependent electron paramagnetic resonance (EPR) studies on Pr_1-x Ca_xMnO_3 for x = 0.64 which is electron-doped with those on the hole doped x = 0.36 composition. The temperature dependence…

强关联电子 · 物理学 2007-05-23 Janhavi P. Joshi , A. K. Sood , S. V. Bhat , K. Vijaya Sarathy , C. N. R. Rao

We investigate theoretically and experimentally the electron paramagnetic resonance (EPR) spectra of bismuth doped silicon (Si:Bi) at intermediate magnetic fields, $B \approx 0.05 -0.6$ T. We identify a previously unexplored EPR regime of…

量子物理 · 物理学 2010-08-27 M. H. Mohammady , G. W. Morley , T. S. Monteiro

Rare-earth spin ensembles are a promising platform for microwave quantum memory applications due to their hyperfine transitions, which can exhibit exceptionally long coherence times when using an operation point with zero first-order Zeeman…

Electron spin resonance (ESR) investigation of graphene nanoribbons (GNRs) prepared through longitudinal unzipping of multiwalled carbon nanotubes (MWCNTs) indicates the presence of C-related dangling bond centers, exhibiting paramagnetic…

介观与纳米尺度物理 · 物理学 2015-05-19 S. S. Rao , A. Stesmans , D. V. Kosynkin , A. Higginbotham , J. M. Tour

Electrically detected electron spin resonance (ESR) is used to study the hyperfine interaction of the two-dimensional electrons and the nuclei of the host lattice in a GaAs/AlGaAs heterostructure. Under the microwave and radio- frequency…

介观与纳米尺度物理 · 物理学 2009-11-07 Chris Hillman , H. W. Jiang

We herein estimate the effect of lattice defects on the line shape of electron paramagnetic resonance (EPR) signals from a single crystal of the S=10 single-molecule magnet Mn$_{12}$ with the external magnetic field along the crystal c…

凝聚态物理 · 物理学 2009-11-07 Kyungwha Park , N. S. Dalal , P. A. Rikvold

The local environment of Eu$^{2+}$ ($4f^{7}$, $S=7/2$) in Ca$_{1-x}$Eu$_{x}$B$_{6}$ ($0.003\leqslant x\leqslant 1.00$) is investigated by means of electron spin resonance (ESR). For $x\lesssim 0.003$ the spectra show resolved \textit{fine}…

We report on a systematic temperature dependent X-band electron paramagnetic resonance (EPR) study of nano-sized graphite particles prepared by ball-milling. In as-prepared samples a very intense and sharp EPR resonance at $g=2.0035$ has…

Empirical potential structure refinement (EPSR) simulations are performed on total neutron scattering data from powder samples of polytetrafluoroethylene (PTFE) and polychlorotrifluoroethylene (PCTFE), both at 300K. For PTFE a number of…

软凝聚态物质 · 物理学 2013-09-27 A K Soper , K Page , A Llobet

A detailed multifrequency high field - high frequency EPR (95-285 GHz) study has been performed on the single-molecule magnet of formula [Fe8O2(OH)12(tacn)6]Br8 9H2O, where tacn=1,4,7-triazacyclononane. Polycrystalline powder spectra have…

介观与纳米尺度物理 · 物理学 2016-08-31 Anne Laure Barra , Dante Gatteschi , Roberta Sessoli

The 105 K second-order displacive phase transition of SrTiO3 has been studied with the help of Electron Paramagnetic Resonance. The photochromic non-cubic Fe5+ centre is used as local probe. Critical phenomena, characterized by an exponent…

材料科学 · 物理学 2021-05-13 Th. W. Kool

Experiments of Electron Spin Resonance (ESR) were performed on Co$% ^{2+}$ substituting Zn$^{2+}$ or Mg$^{2+}$ in powder samples of Zn$_2$(OH)PO$_4$ and Mg$_2$(OH)AsO$_4$. The observed resonances are described with a theoretical model that…

材料科学 · 物理学 2009-11-07 M. E. Foglio , M. C dos Santos , G. E. Barberis , J. M. Rojo , J. L. Mesa , L. Lezama , T. Rojo

We present a comprehensive investigation into the physical properties of intermetallic ErPd$_2$Si$_2$, a compound renowned for its intriguing magnetic and electronic characteristics. We confirm the tetragonal crystal structure of…

Using an optical tweezers apparatus, we demonstrate three-dimensional control of nanodiamonds in solution with simultaneous readout of ground-state electron-spin resonance (ESR) transitions in an ensemble of diamond nitrogen-vacancy (NV)…

The evolution of the polycrystalline pattern of electron paramagnetic resonance (EPR) spectra of intrinsic and induced paramagnetic centers in an ensemble of submicrometer diamond particles on diminishing average particle size is…

介观与纳米尺度物理 · 物理学 2019-12-24 G. G. Zegrya , D. M. Samosvat , V. Yu. Osipov , A. Ya. Vul' , A. I. Shames

A series of electron spin resonance (ESR) experiments were performed on a single crystal of the heavy fermion metal YbIr2Si2 to map out the anisotropy of the ESR-intensity I_ESR which is governed by the microwave field component of the…

强关联电子 · 物理学 2010-03-29 T. Gruner , J. Wykhoff , J. Sichelschmidt , C. Krellner , C. Geibel , F. Steglich

The Eu{+2} spins S = 7/2 in the metallic compound EuCo{2-y}As2 order into an antiferromagnetic helical structure below a Neel temperature TN = 40 to 45 K. The effective magnetic moment mu_eff of the Eu spins in the paramagnetic state from…

强关联电子 · 物理学 2018-12-18 N. S. Sangeetha , S. D. Cady , D. C. Johnston

We report on magnetization and electron spin resonance (ESR) measurements of Sr$_{2}$VO$_4$ with orthorhombic symmetry. In this dimer system the $V^{4+}$ ions are in tetrahedral environment and are coupled by an antiferromagnetic…

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 report electron spin resonance (ESR) measurements on a large-area silicon MOSFET. An ESR signal at g-factor 1.9999(1), and with a linewidth of 0.6 G, is observed and found to arise from two-dimensional (2D) electrons at the Si/SiO2…

材料科学 · 物理学 2009-12-20 S. Shankar , A. M. Tyryshkin , S. Avasthi , S. A. Lyon