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Orbital occupation and magnetic moments of tetrahedrally coordinated iron in CaBaFe4O7
Orbital occupation magnetic moments tetrahedrally coordinated iron
2010/11/25
CaBaFe4O7 is a mixed-valent transition metal oxide having both Fe2+ and Fe3+ ions in tetrahedral coordination. Here we characterize its magnetic properties by magnetization measurements and investigat...
A new dense silica polymorph: A possible link between tetrahedrally and octahedrally coordinated silica
A possible link octahedrally coordinated silica
2014/4/8
We present the discovery of a novel dense silica polymorph retrieved from shock-wave and diamond-anvil cell experiments. This polymorph is the first observed silicate composed of face-sharing
polyhe...
Al, Si, and Mg occupancies in tetrahedrally and octahedrally coordinated sites in synthetic aluminous tremolite
Al Si Mg occupancies tetrahedrally octahedrally coordinated sites synthetic aluminous tremolite
2012/4/5
Aseriesofaluminoustremoliteswassynthesizedat800¤C85Cand6¤C13kbaralonthejoinCa
Mg Si O (OH) -Ca (Mg Al)(AlSi )O (OH) bymeansoftheMg-Tscher-
makssubstitution.Althoughtheamphiboleyieldswerehigh(97¤C99w...
A Mathematical Formulation for Diamagnetism in Tetrahedrally Bonded Semiconductors
A Mathematical Formulation Diamagnetism Tetrahedrally Bonded Semiconductors
2010/12/10
An expression for the magnetic susceptibility tensor corresponding to diamagnetic contribution in tetrahedrally bonded semiconductors is derived; this formulation refers to the crystalline state. In a...
On Cluster Calculation for Amorphous Tetrahedrally Bonded Semiconductors
Cluster Calculation Amorphous Tetrahedrally Bonded Semiconductors
2010/12/10
This article consists of an approach to the calculation of the density of valence states in tetrahedrally bonded amorphous semiconductors and, on the other hand, the paper contains theoretical conside...
Magnetic Susceptibility of Tetrahedrally Bonded Amorphous Semiconductors
semiconductors a diamagnetic term a paramagnetic contribution
2010/12/14
A special theoretical formulation on the magnetic susceptibility of tetrahedral amorphous semiconductors is proposed. This formulation is based upon a Wannier representation involving two terms: a dia...
A New Mathematical Model for Cluster Calculation in Tetrahedrally Bonded Amorphous Semiconductors
Cluster Calculation Bonded Amorphous Semiconductors
2010/12/15
Tetrahedraily bonded amorphous semiconductors exhibit a structure suitable for applying the so-called extended Hückel theory (EHT) to determine the electronic density of states by means of the cluster...