中文
相关论文

相关论文: Stabilization of the oxygen concentration in La$_{…

200 篇论文

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

The IR optical absorption (0.1-1.5 eV) in the $La_{0.7}Ca_{0.3}MnO_3$ films on LAO substrate exhibits the drastic temperature evolution of the spectral weight evidencing the insulator to metal transition. Single crystal films were found to…

Ruthenium dioxide (RuO$_2$) thin films were synthesized by Chemical Solution Deposition (CSD) on silicon substrates using only water and acetic acid as solvents. The microstructure, phase-purity, electrical and optical properties as well as…

The evolution of the atomic structure of LaAlO3 grown on SrTiO3 was investigated using surface x-ray diffraction in conjunction with model-independent, phase-retrieval algorithms between two and five monolayers film thickness. A…

We show for the system La1-xCexCoO3 (0.1 <= x <= 0.4) that it is possible to synthesize electron-doped cobaltites by the growth of epitaxial thin films. For La1-xCexCoO3, ferromagnetic order is observed within the entire doping range (with…

强关联电子 · 物理学 2007-05-23 Dirk Fuchs , Peter Schweiss , Thorsten Schwarz , Rudolf Schneider

Epitaxial Ba0.5Sr0.5TiO3 thin films grown on the (001) LaAlO3 substrates with the ferroelectric transition of about 250K have been investigated by TEM and off-axis electron holography. Cross-sectional TEM observations show that the…

材料科学 · 物理学 2009-11-10 H. F. Tian , H. C. Yu , X. H. Zhu , Y. G. Wang , D. N. Zheng , H. X. Yang , J. Q. Li

This paper reports on the structural and optical properties of Co-doped TiO2 thin films grown onto (0001) Al2O3 substrates by non-reactive pulsed laser deposition (PLD) using argon as buffer gas. It is shown that by keeping constant the…

材料科学 · 物理学 2013-07-09 S. Rout , N. Popovici , S. Dalui , M. L. Paramês , R. C. Silva , A. J. Silvestre , O. CondE

In this article, an overview of the fabrication and properties of high quality La0.67Sr0.33MnO3 (LSMO) thin films is given. A high quality LSMO film combines a smooth surface morphology with a large magnetization and a small residual…

We have succeeded in preparing high-quality Gd-doped single-crystalline EuO films. Using Eu-distillation-assisted molecular beam epitaxy and a systematic variation in the Gd and oxygen deposition rates, we have been able to observe…

The effect of gold capping on magnetic and transport properties of optimally doped manganite thin films is studied. An extraordinary suppression of conductivity and magnetic properties occurs in epitaxial (001) La_0.67Sr_0.33MnO_3 (LSMO)…

材料科学 · 物理学 2008-05-14 A. A. Sidorenko , G. Allodi , R. De Renzi , S. Brivio , M. Cantoni , M. Finazzi , R. Bertacco

Among the class of strongly-correlated oxides, La1-xSrxMnO3 $-$ a half metallic ferromagnet with a Curie temperature above room temperature $-$ has sparked a huge interest as a functional building block for memory storage and spintronic…

材料科学 · 物理学 2022-09-21 Alan Molinari , Saleh Gorji , Jan Michalička , Christian Kübel , Horst Hahn , Robert Kruk

In the present study we report on properties of ZnCoO films grown at relatively low temperature by the Atomic Layer Deposition, using two reactive organic zinc precursors (dimethylzinc and diethylzinc). The use of these precursors allowed…

Although over the past number of years there have been many advances in the materials aspects of topological insulators (TI), one of the ongoing challenges with these materials is the protection of them against aging. In particular, the…

Prior studies have shown that photoluminescence from Er3+ impurities in silicon is severely limited at room temperature by non-radiative relaxation and solid solubility; and room temperature emission from Er3+ in oxide-based hosts becomes…

材料科学 · 物理学 2012-02-06 Sufian Abedrabbo , Anthony Fiory

We report a clear correspondence between changes in the Curie temperature and carrier density upon annealing in epitaxially grown (Ga,Mn)As layers with thicknesses in the range between 5 nm and 20 nm. The changes are dependent on the layer…

材料科学 · 物理学 2009-11-07 B. Sorensen , J. Sadowski , R. Mathieu , P. Svedlindh , P. E. Lindelof

Homogeneous highly epitaxial LaSrMnO3 (LSMO) thin films have been grown on Yttria-stabilized-Zirconia (YsZ) / CeO2 buffer layers on technological relevant 4" silicon wafers using a Twente Solid State Technology B.V. (TSST) developed large…

Most commercial high-temperature superconducting coated conductors based on ion beam assisted MgO deposited templates use $\mathrm{LaMnO_3}$ (LMO) films as the terminating buffer layer. In contrast, coated conductors based on inclined…

超导电性 · 物理学 2020-12-03 Oleksiy Troshyn , Christian Hoffmann , Veit Große , Jens Hänisch , Lucas Becker , Rudolf Gross

Thin films of Co-TiO2 are deposited on silicon and quartz substrates using Pulse Laser Deposition (PLD) process at various oxygen partial pressures ranging from 6.6 x 10-3 Pascals (Pa) to 53 Pa. Crystal structure, transport and magnetic…

材料科学 · 物理学 2007-05-23 Bakhtyar Ali , Abdul K Rumaiz , S. Ismat Shah , Arif Ozbay , Edmund R Nowak

Nanostructured La0.67Ca0.33MnO3 (NS-LCMO) was formed by pulsed-laser deposition on the surface of porous Al2O3. The resistance peak temperature (Tp) of the NS-LCMO increases with increasing average thickness of the films, while their Curie…

材料科学 · 物理学 2009-11-10 Y. G. Zhao , W. Cai , X. S. Wu , X. P. Zhang , K. Wang , S. N. Gao , L. Lu

The effect of growth conditions on the structural and electronic properties of the polar/non-polar LaCrO$_3$/SrTiO$_3$ (LCO/STO) interface has been investigated. The interface is either insulating or metallic depending on growth conditions.…

材料科学 · 物理学 2019-06-04 A. H. Al-Tawhid , J. R. Frick , D. B. Dougherty , D. P. Kumah