Search results for "NICKEL"
showing 10 items of 1087 documents
Alternating antiferromagnetic and ferromagnetic exchange interactions in the S = 1 Heisenberg chain. Theory and magnetic properties
1997
Abstract We focus on the magnetic properties of the S = 1 Heisenberg chain with alternating antiferromagnetic and ferromagnetic exchange interactions J 1 and J 2 . The magnetic behavior of this system is calculated as a function of the alternation parameter α = J 2 /| J 1 |, from a general numerical procedure based on closed spin chains of increasing length. These theoretical results are fitted to rational unified expressions, which are subsequently used to describe the magnetic behavior of a nickel (II) complex, [Ni(bipy)(N 3 ) 2 ] n , exhibiting an alternating chain structure with a dominant ferromagnetic exchange.
Innentitelbild: Poly(polyoxotungstate)s with 20 Nickel Centers: From Nanoclusters to One-Dimensional Chains (Angew. Chem. 39/2009)
2009
Investigation of Interactions of Electrically Charged Hydrogen Atoms with Defects in Nickel by the Positron Annihilation Method
1990
On montre qu'une desintegration de la phase Ni-H de type β change essentiellement le processus d'annihilation. Les mesures dependent du temps de debut des mesures apres chargement cathodique, et de la concentration des defauts avant hydrogenation, et du volume de la phase β
Nickel(II) Coordination Clusters Based on N-salicylidene-4-chloro-oaminophenol: Synthetic and Structural Studies
2018
Synthesis, Crystal Structure, and Magnetic Properties of an Octanuclear Nickel(II) Complex with ahexahedro-Ni8 Core
1996
Cover Feature: From Bowls to Capsules: Assembly of Hexanuclear Ni II Rings Tailored by Alkali Cations (Chem. Eur. J. 49/2020)
2020
Poly(polyoxotungstate)s with 20 Nickel Centers: From Nanoclusters to One-Dimensional Chains
2009
ChemInform Abstract: Poly(polyoxotungstate)s with 20 Nickel Centers: From Nanoclusters to One-Dimensional Chains.
2009
Quartz Crystal Microbalance And Electrical Impedance Characterization Of Nickel Dissolution Process.
2005
Abstract. The anodic nickel dissolution in acid media is analysed by means of EQCM and EIS techniques. The experimental impedance spectra have been fitted to the equivalent circuit which corresponds to two consecutive electron transfers followed by a Ni(II) desorption. That way rate constants and surface concentrations of the Ni(0) and Ni(I) species are obtained. EQCM also provides information about the mechanism of deposition and passivation of nickel as well as the hydrogen evolution.