Premium
Magnetic Properties of Crystalline and Amorphous Phase‐Change Materials Doped with 3 d Impurities
Author(s) -
Zhang Wei,
Ronneberger Ider,
Li Yan,
Mazzarello Riccardo
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201201507
Subject(s) - impurity , materials science , doping , amorphous solid , ferromagnetism , condensed matter physics , phase (matter) , crystallography , optoelectronics , physics , organic chemistry , chemistry
First‐principles study of the structural and magnetic properties of cubic and amorphous phase‐change materials doped with 3 d impurities . We find that Co‐ and Ni‐doped Ge 2 Sb 2 Te 5 is non‐magnetic, whereas Cr‐ and Mn‐doped Ge 2 Sb 2 Te 5 is magnetic and exhibits a significant magnetic contrast between the two phases in the ferromagnetic configuration. These results are explained in terms of differences in local structure and hybridization of the impurity d‐orbitals with the host states.