High Magnetic Moments in Manganese-Doped Silicon Clusters
نویسندگان
چکیده
منابع مشابه
Magnetic enhancement in cobalt-manganese alloy clusters.
Magnetic moments of Co(N)Mn(M) and Co(N)V(M) clusters (N < or = 60; M < or = N/3) are measured in molecular beams using the Stern-Gerlach deflection method. Surprisingly, the per atom average moments of Co(N)Mn(M) clusters are found to increase with Mn concentration, in contrast to bulk CoMn. The enhancement with Mn doping is found to be independent of cluster size and composition in the size r...
متن کاملMagnetic moments of chromium-doped gold clusters: the Anderson impurity model in finite systems.
The magnetic moment of a single impurity atom in a finite free electron gas is studied in a combined x-ray magnetic circular dichroism spectroscopy, charge transfer multiplet calculation, and density functional theory study of size-selected free chromium-doped gold clusters. The observed size dependence of the local magnetic moment can be understood as a transition from a local moment to a mixe...
متن کاملStructural Identification of Doped Silicon Clusters
In this chapter we review recent research on the structural identification of isolated doped silicon clusters by combining state-of-the-art experiments and computational modelling using the density functional theory formalism. The experimental techniques include chemical probe mass spectrometric methods, infrared action spectroscopy, photoelectron spectroscopy, and x-ray absorption spectroscopy...
متن کاملGiant magnetic moments of B and C doped cuboctahedral Mn13 clusters.
Using first-principles calculations based on gradient corrected density functional theory we show that an otherwise distorted icosahedric Mn(13) ferrimagnetic cluster, when doped with six B or C atoms, transforms into a ferromagnetic cuboctahedral cluster with a magnetic moment that is an order of magnitude larger than that of the pure Mn(13) cluster. The origin of this magnetic transition is a...
متن کاملAtomic domain magnetic nanoalloys: interplay between molecular structure and temperature dependent magnetic and dielectric properties in manganese doped tin clusters.
We present extensive temperature dependent (16-70 K) magnetic and electric molecular beam deflection measurements on neutral manganese doped tin clusters Mn/SnN (N = 9-18). Cluster geometries are identified by comparison of electric deflection profiles and quantum chemical data obtained from DFT calculations. Most clusters adopt endohedral cage structures and all clusters exhibit non-vanishing ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chemistry - A European Journal
سال: 2012
ISSN: 0947-6539
DOI: 10.1002/chem.201201839