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A detailed analysis of the November 15, 2006 data release (Clowe et al., 2006) X-ray surface density Sigma-map and the strong and weak gravitational lensing convergence kappa-map for the Bullet Cluster 1E0657-558 is performed and the…

天体物理学 · 物理学 2009-09-29 J. R. Brownstein , J. W. Moffat

Three solid solutions of [CH$_3$NH$_3$]Co$_x$Ni$_{1-x}$(HCOO)$_3$, with $x$ = 0.25 (1), 0.50 (2) and 0.75 (3), were synthesized and their nuclear structures and magnetic properties were characterized using single crystal neutron diffraction…

强关联电子 · 物理学 2024-08-06 Madeleine Geers , Oscar Fabelo , Matthew J. Cliffe , Laura Cañadillas-Delgado

We report the magnetic properties of magnetic nano-composite, consisting of different quantity of NiFe2O4 nanoparticles in polymer matrix. The nanoparticles exhibited a typical magnetization blocking, which is sensitive on the variation of…

材料科学 · 物理学 2015-05-13 A. Poddar , R. N. Bhowmik , Amitabha De , Pintu Sen

We observed a slow relaxation of magnetoresistance in response to applied magnetic field in selectively doped p-GaAs-AlGaAs structures with partially filled upper Hubbard band. We have paid a special attention to exclude the effects related…

介观与纳米尺度物理 · 物理学 2015-05-18 N. V. Agrinskaya , V. I. Kozub , D. V. Shamshur , A. V. Shumilin , Y. M. Galperin

We report the structural and magnetic properties of ZnO single crystals implanted at 623 K with up to 10 at. % of Ni. As revealed by X-ray diffraction, crystalline fcc-Ni nanoparticles were formed inside ZnO. The magnetic behavior…

材料科学 · 物理学 2007-05-23 Shengqiang Zhou , K. Potzger , Gufei Zhang , F. Eichhorn , W. Skorupa , M. Helm , J. Fassbender

Cobalt based sulphides of compositional formula Co$ _{3} $A$ _{2} $S$ _{2} $ (A = Sn and In) are endowed with frustrated kagome lattice structure and a plethora of novel phenomena determined from the topological band structure. Here-in, we…

强关联电子 · 物理学 2022-10-26 V. Nagpal , S. Chaudhary , P. Kumar , Sudesh , S. Patnaik

We studied the magnetic properties of ferromagnetic-semiconductor composites based on nickel and porous-GaN, motivated by the effort to couple magnetic and semiconductor functionality. Nickel-infiltrated and nickel-coated (laminated…

Various MSr2YCu2Oz (M1212 with M = Fe, Co, Al and Ga) compounds have been synthesized through a solid state reaction route. All these compounds are derived from the basic CuBa2YCu2O7 structure. Rietveld structural refinement of the…

超导电性 · 物理学 2009-11-07 V. P. S. Awana , E. Takayama-Muromachi , S. K. Malik , W. B. Yelon , M. Karppinen , H. Yamauchi

We present results from the XMM-Newton observations of our ongoing program on merging clusters. To date three clusters have been observed, covering the temporal sequence from early to late stage mergers: A1750, A2065 and A3921. Using…

天体物理学 · 物理学 2009-11-10 E. Belsole , J-L. Sauvageot , G. W. Pratt , H. Bourdin

In order to study the magnetic and crystal structures in the Nd{1-x}Sr{x}MnO{3} system, we have peformed neutron diffraction measurements on melt-grown polycrystalline samples with 0.49 < x < 0.75. As a function of hole concentration x, the…

强关联电子 · 物理学 2009-10-31 R. Kajimoto , H. Yoshizawa , H. Kawano , H. Kuwahara , Y. Tokura , K. Ohoyama , M. Ohashi

As a simple cubic system with only one f electron per cerium ion, CeB6 is of model character to investigate the interplay of orbital phenomena with magnetism. It is also a textbook example of a compound that exhibits magnetically hidden…

强关联电子 · 物理学 2021-08-13 P. Y. Portnichenko , A. S. Cameron , D. S. Inosov

The crystal structure and magnetic properties of YCo$_5$ compound have been studied by neutron diffraction, in the pressure range $0 \le p \le 7.2 \ GPa$. The experimental data are analyzed together with results from the combined Density…

强关联电子 · 物理学 2018-06-13 E. Burzo , P. Vlaic , D. P. Kozlenko , N. O. Golosova , S. E. Kichanov , B. N. Savenko , A. Östlin , L. Chioncel

Density-functional theory based global geometry optimization is used to scrutinize the possibility of using endohedrally-doped hydrogenated Si clusters as building blocks for constructing highly magnetic materials. In contrast to the known…

材料科学 · 物理学 2013-07-26 Dennis Palagin , Karsten Reuter

Cold atomic clouds and Bose-Einstein condensates have been stored in a 10cm diameter vertically-oriented magnetic ring. An azimuthal magnetic field enables low-loss propagation of atomic clouds over a total distance of 2m, with a heating…

其他凝聚态物理 · 物理学 2007-05-23 A. S. Arnold , C. S. Garvie , E. Riis

Here, we investigate the nature of the moment coupling between 10-nm DMSA-coated magnetic nanoparticles, in both colloidal dispersion and in powder form. The individual iron oxide cores were composed of > 95% maghemite and agglomerated to…

We report on the magnetic properties and the crystallographic structure of the cobalt nanowire arrays as a function of their nanoscale dimensions. X-ray diffraction measurements show the appearance of an in-plane HCP-Co phase for nanowires…

材料科学 · 物理学 2009-11-24 J. Sanchez-Barriga , M. Lucas , F. Radu , E. Martin , M. Multigner , P. Marin , A. Hernando , G. Rivero

The crystal structure and magnetic properties of the RbMnPO4 zeolite-ABW type material have been studied by temperature-dependent neutron powder diffraction, low temperature magnetometry and heat capacity measurements. RbMnPO4 represents a…

材料科学 · 物理学 2014-10-02 G. Nénert , J. L. Bettis, , R. K. Kremer , H. Ben Yahia , C. Ritter , E. Gaudin , O. Isnard , M. -H. Whangbo

We demonstrate an integrated magnetic ``atom chip'' which transports cold trapped atoms near a surface with very high positioning accuracy. Time-dependent currents in a lithographic conductor pattern create a moving chain of magnetic…

量子物理 · 物理学 2007-05-23 W. Hänsel , J. Reichel , P. Hommelhoff , T. W. Hänsch

We investigate the structure and magneto-transport properties of thin films of the Co_2Cr_xFe_(1-x)Al full-Heusler compound, which is predicted to be a half-metal by first-principles theoretical calculations. Thin films are deposited by…

材料科学 · 物理学 2009-11-11 A. D. Rata , H. Braak , D. E. Buergler , S. Cramm , C. M. Schneider

We study the magnetic properties of small Mn ring shaped clusters on a Pt(111) surface in the framework of density functional theory. We find that the Mn atoms possess large magnetic moments, of the order of 4uB/atom, and have dominating…

介观与纳米尺度物理 · 物理学 2015-05-20 M. S. Ribeiro , G. B. Corrêa , A. Bergman , L. Nordström , O. Eriksson , A. B. Klautau
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