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Monolayers of colloidally synthesized cobalt-platinum nanoparticles of different diameters characterized by TEM (transmission electron microscopy) were deposited on structured silicon oxide substrates and characterized by SEM (scanning…

材料科学 · 物理学 2019-08-17 Denis Greshnykh , Andreas Fromsdorf , Horst Weller , Christian Klinke

This work presents a magnetic field imaging method based on color centres in diamond crystal applied to thin film structure. To demonstrate the capacity of our device we have used it for characterization of magnetic properties in…

Bulk rhenium trioxide (ReO3) has an unusually high electrical conductivity and, being nanosized, has promising catalytic properties. However, the production of pure ReO3 thin films is challenging due to the difficulty to stabilize rhenium…

材料科学 · 物理学 2022-06-30 M. Zubkins , A. Sarakovskis , E. Strods , L. Bikse , B. Polyakov , A. Kuzmin , V. Vibornijs , J. Purans

Hydrogen sensors have been prepared using nickel oxide (NiO) and lithium-doped nickel oxide (NiO:Li) thin films, deposited on glass substrates by the sol-gel spin coating technique. The surface morphology, structure, optical and electrical…

材料科学 · 物理学 2014-12-23 I. Sta , M. Jlassi , M. Kandyla , M. Hajji , P. Koralli , R. Allagui , M. Kompitsas , H. Ezzaouia

We studied structural, optical and magnetic properties of high-quality 5 and 15% Co-doped ZnO films grown by plasma-assisted molecular beam epitaxy (MBE) on (0001)-sapphire substrates. Magnetic force microscopy (MFM) and magnetic…

Hot wall technique was used to grow block single crystal films of Bi_2Te_3 and solid solutions of Bi_(0.5)Sb_(1.5)Te_3 on mica (muscovite) substrates. X-ray diffraction studies demonstrated that the crystalline c-axis in the films was…

材料科学 · 物理学 2014-12-09 L. N. Lukyanova , Yu. A. Boikov , V A Danilov , O A Usov , M P Volkov , V. A. Kutasov

The newly found superconductivity in infinite-layer nickelate superconducting films has attracted much attention, because their crystalline and electronic structures are similar to high-$T_c$ cuprate superconductors. The upper critical…

超导电性 · 物理学 2021-04-08 Ying Xiang , Qing Li , Yueying Li , Huan Yang , Yuefeng Nie , Hai-Hu Wen

We discovered a fractional Chern structure in chiral superconducting Sr$_2$RuO$_4$ nanofilms by employing electric transport. By using Sr$_2$RuO$_4$ single crystals with nanoscale thickness, a fractional Hall conductance was observed…

强关联电子 · 物理学 2017-01-25 Hiroyoshi Nobukane , Toyoki Matsuyama , Satoshi Tanda

In the present study, Mg-doped ZnO (MZO) nanofilms (NF) were grown by spray pyrolysis technique. X-ray diffraction (XRD) patterns have shown an intense peak oriented along (002) crystalline plane confirming crystalline origin of grown MZO…

The TUCAN (TRIUMF Ultra-Cold Advanced Neutron) collaboration aims to search for the neutron electric dipole moment (nEDM) with unprecedented precision. One of the essential elements for the nEDM measurement is a polarization analyzer of…

Using the self-consistent Landau-Ginzburg-Devonshire approach we simulate and analyze the spontaneous formation of the domain structure in thin ferroelectric films covered with the surface screening charge of the specific nature…

Room-temperature ferromagnetism is observed in (110) oriented ZnO films containing 5 at % of Sc, Ti, V, Fe, Co or Ni, but not Cr, Mn or Cu ions. There are large moments, 1.9 and 0.5 muB/atom for Co- and Ti-substituted oxides, respectively.…

材料科学 · 物理学 2009-11-10 M. Venkatesan , C. B. Fitzgerald , J. G. Lunney , J. M. D. Coey

Optical and magneto-optical properties of ZnMnO films grown at low temperature by Atomic Layer Deposition are discussed. A strong polarization of excitonic photoluminescence is reported, surprisingly observed without splitting or spectral…

Experimental efforts to stabilize ferromagnetism in ultrathin films of transition metal oxides have so far failed, despite expectations based on density functional theory (DFT) and DFT+U. Here, we investigate one of the most promising…

强关联电子 · 物理学 2015-07-15 Liang Si , Zhicheng Zhong , Jan M. Tomczak , Karsten Held

Ferrites with (inverse) spinel structure display a large variety of electronic and magnetic properties making some of them interesting for potential applications in spintronics. We investigate the thermally induced interdiffusion of…

The effects of strain on a film of mulitferroic GdMnO3 are investigated using both magnetometry and magneto-optic spectroscopy. Optical spectra, in the energy range 1.5eV - 3.5eV, were taken in Faraday geometry in an applied magnetic field…

Thin films of Co2MnSi have been grown on a-plane sapphire substrates from three elemental targets by dc magnetron co-sputtering. These films are single phase, have a strong (110) texture and a saturation magnetization of 4.95 uB/formula…

材料科学 · 物理学 2009-11-10 L. J. Singh , Z. H. Barber , Y. Miyoshi , Y. Bugoslavsky , W. R. Branford , L. F. Cohen

Due to the lack of any magnetic order down to 1.7 K in the parent bulk compound NdNiO2, the recently discovered 9-15 K superconductivity in the infinite-layer Nd0.8Sr0.2NiO2 thin films has provided an exciting playground for unearthing new…

A novel method to image charge is used to measure the diffusion coefficient of electrons in films of CdSe nanocrystals at room temperature. This method makes possible the study of charge transport in films exhibiting high resistances or…

介观与纳米尺度物理 · 物理学 2009-11-10 M. Drndic , R. Markov , M. V. Jarosz , M. G. Bawendi , M. A. Kastner , N. Markovic , M. Tinkham

The authors report on the interplay between magnetically ordered phases with temperature and magnetic field across compressively strained interfaces of thin La0.67Sr0.33MnO3 films on LaAlO3 substrates. From the temperature dependence of the…

应用物理 · 物理学 2019-03-04 Arjan A. Burema , Job J. L. van Rijn , Tamalika Banerjee