Growth and magnetic properties of single crystal Co/sub 2/MnX (X=Si,Ge) Heusler alloys

Magnetic, transport and thermal properties of single crystal Co2FeGa

“…4. The small residual resistivity ratio ρ 300K /ρ 5K ∼ 1.66 indicates a significant degree of atomic disorder in the Co 2 FeGa sample [18]. The usual expression for the temperature dependence of resistivity for metals and alloys can be described by the Matthiessen rule ρ(T) = ρ 0 + CT n .…”

“…It has also been theoretically shown that a pseudogap in the density of states of the minority spin subband disappeared due to the atomic disorder in several Heusler alloys, such as Rh 2 MnZ (Z = Ge, Sn, Pb or Cu 2 NiZn) [16,17]. Current theoretical and experimental evidence suggests that the diminished spin-polarization in Co 2 MnGe and similar alloys is due to the antisite disorder [16][17][18][19][20][21][22][23][24]. In this letter, we present a study of magnetic, transport and thermal properties of single crystal Co 2 FeGa.…”

Element-specific magnetic properties of Co2MnSi thin films

“…The moments of the displaced atoms are usually antialigned with the surrounding local moments, and therefore reduce the total magnetic moment per formula unit of the system and strongly modify the anticipated electron spin-polarization. [6][7][8] The magnetic, structural, and electrical properties of bulk [9][10][11] and thin film [12][13][14][15] Co 2 MnSi have been extensively studied. However, the only known study of the elementspecific magnetic properties of this alloy was carried out using polarized neutron reflectivity ͑PNR͒.…”

Crystal Growth of Magnetic Materials

“…The ferromagnetic shape memory compound Ni 2 MnGa plays an important role (Schlagel, Wu, Hang and Lograsso, 2000) (cf. Section 4.3.3) as do the compounds Co 2 MnX (X = Si, Ge) (Cheng et al, 2001) due to their high Curie temperatures and the predicted high spin polarization. Cheng et al (2001) reported the growth of both Co 2 MnSi and Co 2 MnGe high-quality crystals.…”

“…Section 4.3.3) as do the compounds Co 2 MnX (X = Si, Ge) (Cheng et al, 2001) due to their high Curie temperatures and the predicted high spin polarization. Cheng et al (2001) reported the growth of both Co 2 MnSi and Co 2 MnGe high-quality crystals. The magnetic moment per formula unit of 5.1 µ B well agrees with the known predictions and confirmes the semimetallic nature of these materials.…”