Some experimental and theoretical studies on the Mn magnetic moment in Y ( Ni 1 - x Mn x ) 2 B 2 C |
| |
| Authors: | FS da Rocha GLF Fraga DE Brand?o CM Granada CM da Silva and AA Gomes |
| |
| Institution: | (1) Instituto de Fısica - UFRGS, Porto Alegre, Brazil, BR;(2) Departamento de Física - UFSM, Santa Maria, Brazil, BR;(3) Centro Brasileiro de Pesquisas Físicas/CNPq, Rua Xavier Sigaud 150, Rio de Janeiro 22290-180, Brazil, BR |
| |
| Abstract: | The magnetic moment of the Mn impurities was obtained from magnetization measurements of Y
(
Ni
1 - x
Mn
x
)
2
B
2
C as a function of the concentration x less than 0.15. Using the coherent potential approximation and starting from 3
d density of states, obtained from the first principles calculations, the magnetic moments are obtained within a two sublattice
model. For adequately estimated values of the Coulomb interactions U, the position of the energy level of Mn and adopting values for the intersublattice hybridization term, a qualitative agreement
with the observed experimental data is obtained.
Received 23 April 2001 and Received in final form 29 October 2001 |
| |
| Keywords: | PACS 74 25 Jb Electronic structure – 75 10 Lp Band and itinerant models – 75 30 Hx Magnetic impurity interactions – 74 25 Ha Magnetic properties |
| 本文献已被 SpringerLink 等数据库收录！ |
|
