Spintronics
Spintronics
Spintronics
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Slater-Pauling Rule for Heusler<br />
Magic valence electron number 24<br />
Valence electrons =<br />
24 + saturation magnetisation<br />
Co 2 CrAl<br />
2*9 + 6 + 3 = 27<br />
Saturation magnetisation :3μ B<br />
Total spin moment: M t<br />
(μ Β<br />
)<br />
7<br />
6<br />
5<br />
4<br />
3<br />
2<br />
1<br />
0<br />
−1<br />
−2<br />
Co 2<br />
CrAl<br />
Fe 2<br />
MnSi<br />
Ru 2<br />
MnSi<br />
Ru 2<br />
MnGe<br />
Ru 2<br />
MnSn<br />
M t<br />
=Z t<br />
−24<br />
Mn 2<br />
VAl<br />
Co 2<br />
MnSi<br />
Co 2<br />
MnGe<br />
Co 2<br />
MnSn<br />
Co 2<br />
VAl<br />
Fe 2<br />
MnAl<br />
Fe 2<br />
CrAl<br />
Co 2<br />
TiAl<br />
Fe 2<br />
VAl<br />
Mn 2<br />
VGe<br />
Co 2<br />
MnAs<br />
Co<br />
Co<br />
2<br />
MnSb<br />
Rh 2<br />
FeSi<br />
2<br />
MnIn<br />
Rh Co 2<br />
FeAl<br />
2<br />
MnTl<br />
Co 2<br />
TiSn<br />
Co 2<br />
MnAl<br />
Co 2<br />
MnGa<br />
Rh 2<br />
MnAl<br />
Rh 2<br />
MnGa<br />
Ru 2<br />
MnSb<br />
Ni 2<br />
MnAl<br />
Rh 2<br />
MnGe<br />
Rh 2<br />
MnSn<br />
Rh 2<br />
MnPb<br />
−3<br />
20 21 22 23 24 25 26 27 28 29 30 31 32<br />
Number of valence electrons: Z t<br />
Galanakis et al., PRB 66, 012406 (2002)
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