TY - JOUR
T1 - Dependence of anomalous Nernst effect on crystal orientation in highly ordered γ′-Fe4N films with anti-perovskite structure
AU - Isogami, Shinji
AU - Takanashi, Koki
AU - Mizuguchi, Masaki
N1 - Funding Information:
This work was supported by the collaborative research program No. 16K0089 of Institute for Materials Research, Tohoku University, CREST (Grant No. JPMJCR1524) from Japan Science and Technology Agency, and a Grant-in-Aid for Scientific Research (S) (25220910) from the Japan Society for the Promotion of Science. The authors thank Mr. H. Suzuki for technical support in the study of the ANE, Dr. M. Tsunoda for sharing the SQUID-VSM and XRD machines, and Dr. T. Kawai for the fabrication of Fe-Al films.
Publisher Copyright:
© 2017 The Japan Society of Applied Physics.
PY - 2017/7
Y1 - 2017/7
N2 - The anomalous Nernst effect (ANE) in highly ordered Fe4N films was examined in the measurement configuration with an in-plane temperature gradient (∇Tx). The anomalous Nernst coefficient (Qs) in the case of ∇Tx || Fe4N[110] was clearly larger than that in the case of ∇Tx || Fe4N[100]. Note here that no reports on the Qs in Fe4N films have been presented. This anisotropic Qs (Qani) was also observed in a different configuration with an out-of-plane temperature gradient. Unlike Fe4N, pure Fe and A2-FeAl systems showed a negligible Qani. This Qani might be attributed to the specific hybridization effects between the 3d orbitals of Fe and the 2p orbitals of N.
AB - The anomalous Nernst effect (ANE) in highly ordered Fe4N films was examined in the measurement configuration with an in-plane temperature gradient (∇Tx). The anomalous Nernst coefficient (Qs) in the case of ∇Tx || Fe4N[110] was clearly larger than that in the case of ∇Tx || Fe4N[100]. Note here that no reports on the Qs in Fe4N films have been presented. This anisotropic Qs (Qani) was also observed in a different configuration with an out-of-plane temperature gradient. Unlike Fe4N, pure Fe and A2-FeAl systems showed a negligible Qani. This Qani might be attributed to the specific hybridization effects between the 3d orbitals of Fe and the 2p orbitals of N.
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U2 - 10.7567/APEX.10.073005
DO - 10.7567/APEX.10.073005
M3 - Article
AN - SCOPUS:85021817004
VL - 10
JO - Applied Physics Express
JF - Applied Physics Express
SN - 1882-0778
IS - 7
M1 - 073005
ER -