Results 11 to 20 of about 648,122 (330)

Anisotropy in antiferromagnets [PDF]

open access: yesJournal of Applied Physics, 2020
Due to the advent of antiferromagnetic (AF) spintronics, there is a burgeoning interest in AF materials for a wide range of potential and actual applications. Generally, AFs are characterized via the ordering at the Néel temperature (TN), but to have a stable AF configuration, it is necessary that the material has a sufficient level of anisotropy so as
K. O’Grady   +6 more
openaire   +5 more sources

Is there anisotropy in structural bias? [PDF]

open access: yesProceedings of the Genetic and Evolutionary Computation Conference Companion, 2021
Structural Bias (SB) is an important type of algorithmic deficiency within iterative optimisation heuristics. However, methods for detecting structural bias have not yet fully matured, and recent studies have uncovered many interesting questions. One of these is the question of how structural bias can be related to anisotropy. Intuitively, an algorithm
Vermetten, D.   +4 more
openaire   +4 more sources

Holographic spontaneous anisotropy [PDF]

open access: yesJournal of High Energy Physics, 2020
Abstract We construct a family of holographic duals to anisotropic states in a strongly coupled gauge theory. On the field theory side the anisotropy is generated by giving a vacuum expectation value to a dimension three operator. We obtain our gravity duals by considering the geometry corresponding to the intersection of D3- and ...
Carlos Hoyos   +5 more
openaire   +7 more sources

Anisotropy and NMR spectroscopy [PDF]

open access: yesRendiconti Lincei. Scienze Fisiche e Naturali, 2020
Abstract In this paper, different aspects concerning anisotropy in Nuclear Magnetic Resonance (NMR) spectroscopy have been reviewed. In particular, the relevant theory has been presented, showing how anisotropy stems from the dependence of internal nuclear spin interactions on the molecular orientation with respect to the external magnetic field ...
Nardelli, Francesca   +5 more
openaire   +5 more sources

Anisotropy in MgB2 [PDF]

open access: yesBrazilian Journal of Physics, 2003
The first direct measurement of an anisotropic superconducting property in MgB2 was achieved for the bulk nucleation field Hc2, in a sample of aligned crystallites. It was found a ratio g(T) = Habc2/ Hcc2= 1.6 - 1.9, for T varying from 32 K to 26K, between H applied parallel to the ab plane, and along the c direction.
Lima, O. F. de, Cardoso, C. A.
openaire   +4 more sources

Field Dependence of the Superconducting Basal Plane Anisotropy of TmNi2B2C [PDF]

open access: yes, 2012
The superconductor TmNi2B2C possesses a significant four-fold basal plane anisotropy, leading to a square Vortex Lattice (VL) at intermediate fields. However, unlike other members of the borocarbide superconductors, the anisotropy in TmNi2B2C appears to ...
Bud’ko, Sergey   +10 more
core   +4 more sources

(La0.97RE0.01Yb0.02)2O2S Nanophosphors Converted from Layered Hydroxyl Sulfate and Investigation of Upconversion Photoluminescence (RE=Ho, Er)

open access: yesNanoscale Research Letters, 2017
Phase-pure (La0.97RE0.01Yb0.02)2O2S upconversion (UC) nanophosphors (average crystallite size ~ 45 nm; RE=Ho, Er) were annealed from their hydrothermally crystallized layered hydroxyl sulfate precursors in flowing hydrogen at 1200 °C for 1 h, with water ...
Ji-Guang Li   +5 more
doaj   +1 more source

Relating pore fabric geometry to acoustic and permeability anisotropy in Crab Orchard Sandstone: A laboratory study using magnetic ferrofluid [PDF]

open access: yes, 2003
Pore fabric anisotropy is a common feature of many sedimentary rocks. In this paper we report results from a comparative study on the anisotropy of a porous sandstone (Crab Orchard) using anisotropy of magnetic susceptibility (AMS), acoustic wave ...
Benson, PM, Meredith, PG, Platzman, ES
core   +1 more source

Thermal Oxidation Preparation of Doped Hematite Thin Films for Photoelectrochemical Water Splitting

open access: yesInternational Journal of Photoenergy, 2014
Sn- or Ge-doped hematite thin films were fabricated by annealing alloyed films for the purpose of photoelectrochemical (PEC) water splitting. The alloyed films were deposited on FTO glass by magnetron sputtering and their compositions were controlled by ...
Song Li   +4 more
doaj   +1 more source

Desulfovibrio vulgaris as a model microbe for the study of corrosion under sulfate‐reducing conditions

open access: yesmLife, 2022
Corrosion of iron‐containing metals under sulfate‐reducing conditions is an economically important problem. Microbial strains now known as Desulfovibrio vulgaris served as the model microbes in many of the foundational studies that developed existing ...
Toshiyuki Ueki, Derek R. Lovley
doaj   +1 more source

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