TY - JOUR
T1 - Fabrication of L1 0 -FeNi by pulsed-laser deposition
AU - Saito, Masahiro
AU - Ito, Hisaaki
AU - Suzuki, Yuta
AU - Mizuguchi, Masaki
AU - Koganezawa, Tomoyuki
AU - Miyamachi, Toshio
AU - Komori, Fumio
AU - Takanashi, Koki
AU - Kotsugi, Masato
N1 - Funding Information:
This work was partly supported by KAKENHI, JSPS [Scientific Research (B): 16H03873; Young Scientists (A): 24684029] and the Inter-University Cooperative Research Program of Institute for Materials Research, Tohoku University (Proposal Nos. 16K0103, 17K0007, and 18K0050). The SR-XPD measurements were performed at BL46XU of SPring-8 (Proposal Nos. 2012A1076, 2012B1214, 2013A1366, 2013B1222, 2014A1280, 2014B1503, 2015A1516, 2015B1304, 2016A1156, 2016B1185, 2017A1078, 2017A1600, 2017A1784, 2017B1588, and 2017B1814). The magnetization measurements by SQUID were carried out under the Visiting Researcher’s Program of the Institute for Solid State Physics, University of Tokyo. The authors also thank Dr. T. Kojima (IMRAM, Tohoku University) for our valuable discussions on estimation of the order parameter.
Publisher Copyright:
© 2019 Author(s).
PY - 2019/2/18
Y1 - 2019/2/18
N2 - We demonstrated the fabrication of a rare-earth-free ferromagnetic L1 0 -type Fe-Ni alloy (L1 0 -FeNi) by pulsed laser deposition (PLD). We deposited Fe and Ni on Cu(001) by alternating monoatomic deposition via automatically stabilized laser ablation. We examined the structural properties, magnetic properties, and surface morphology of the alloy specimens as the growth temperature (T s ) was varied. We adequately confirmed the construction of the most prominent L1 0 -FeNi phase at 300 °C, which is significantly higher than previously reported growth temperatures, indicating that PLD followed by thermal treatment promoted two-dimensional growth of the adsorbent. The formation process of L1 0 -FeNi was investigated from the standpoint of surface thermodynamics, and the results suggest that the surface free energy of PLD and its highly instantaneous deposition process by PLD played key roles. Our findings are expected to lead to advanced methods for the fabrication of L1 0 -FeNi.
AB - We demonstrated the fabrication of a rare-earth-free ferromagnetic L1 0 -type Fe-Ni alloy (L1 0 -FeNi) by pulsed laser deposition (PLD). We deposited Fe and Ni on Cu(001) by alternating monoatomic deposition via automatically stabilized laser ablation. We examined the structural properties, magnetic properties, and surface morphology of the alloy specimens as the growth temperature (T s ) was varied. We adequately confirmed the construction of the most prominent L1 0 -FeNi phase at 300 °C, which is significantly higher than previously reported growth temperatures, indicating that PLD followed by thermal treatment promoted two-dimensional growth of the adsorbent. The formation process of L1 0 -FeNi was investigated from the standpoint of surface thermodynamics, and the results suggest that the surface free energy of PLD and its highly instantaneous deposition process by PLD played key roles. Our findings are expected to lead to advanced methods for the fabrication of L1 0 -FeNi.
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U2 - 10.1063/1.5087041
DO - 10.1063/1.5087041
M3 - Article
AN - SCOPUS:85061970274
SN - 0003-6951
VL - 114
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 7
M1 - 072404
ER -