TY  - JOUR
AU  - Özdogan, K.
AU  - Aktas, B.
AU  - Galanakis, I.
AU  - Sasioglu, E.
TI  - Influence of mixing the low-valent transition metal atoms (Y, Y*=Cr, Mn, Fe) on the properties of the quaternary Co-2[Y1-xYx*]Z (Z=Al, Ga, Si, Ge, or Sn) Heusler compounds
JO  - Journal of applied physics
VL  - 101
SN  - 0021-8979
CY  - Melville, NY
PB  - American Institute of Physics
M1  - PreJuSER-59158
SP  - 073910
PY  - 2007
N1  - Record converted from VDB: 12.11.2012
AB  - We complement our study on the doping and disorder in Co(2)MnZ compounds [I. Galanakis, K. Ozdogan, B. Aktas, and E. Sasioglu, Appl. Phys. Lett. 89, 042502 (2006) and K. Ozdogan, E. Sasioglu, B. Aktas, and I. Galanakis, Phys. Rev. B 74, 172412 (2006)] to cover also the quaternary Co-2[Y1-xYx*]Z compounds with the lower-valent transition metals Y, Y-* being Cr, Mn, or Fe and the sp atom Z being one of Al, Ga, Si, Ge, and Sn. This study gives a global overview of the magnetic and electronic properties of these compounds since we vary both Y and Z elements. Our results suggest that for realistic applications the most appropriate compounds are the ones belonging to the families Co-2[Mn1-xCrx]Z with x > 0.5 irrespectively of the nature of the sp atoms since they combine high values of majority density of states at the Fermi level due to the presence of Cr, and half-metallicity with large band gaps. On the other hand, the presence of Fe considerably lowers the majority density of states at the Fermi level and when combined with an element belonging to the Si column, it can even destroy half-metallicity. (c) 2007 American Institute of Physics.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000245691000059
DO  - DOI:10.1063/1.2714502
UR  - https://juser.fz-juelich.de/record/59158
ER  -