TY - JOUR
T1 - Interfacial Magnetic Behaviors and Chemical States of Fe Grown on MoS2
AU - Tuli, Farhana Jesmin
AU - Kibria, Mohammad Tawheed
AU - Nakagawa, Takeshi
AU - Mizuno, Seigi
N1 - Funding Information:
The authors thank Shohei Maeyama for his support for the sample preparation. This research was partially supported by Grants‐in‐Aid for Scientific Research (KAKENHI) (grant nos. 25287077, JP20K05329). F.J.T was supported by IEI program (Kyushu University) and the Ministry of Education, Culture, Sports, Science, and Technology (MEXT).
Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/10
Y1 - 2021/10
N2 - Magnetic and chemical properties of ultrathin Fe films on molybdenum disulfide (MoS2) are investigated using magneto-optic Kerr effect (MOKE) and X-ray photoemission spectroscopy (XPS). A magnetization hysteresis loop is found after nominal 10 Å of Fe deposition on MoS2 at room temperature. The thickness-dependent MOKE measurement evaluates that the magnetic dead layer (MDL) exists up to ≈2 Å of Fe on MoS2 due to the interaction between Fe and MoS2. XPS shows small peak shifting for Mo 3d and S 2p peaks toward lower binding energies with initial Fe deposition, indicating the modification of surface band bending. Fe 2p peaks for lower thickness of Fe are significantly broader than those for higher thickness, which is attributed to the coexistence of metallic and ionic Fe in the film. The presence of ionic Fe, localized at the interface, indicates strong interactions between Fe and MoS2, and the existence of chemical bonding at the interface is corroborated with the formation of MDL.
AB - Magnetic and chemical properties of ultrathin Fe films on molybdenum disulfide (MoS2) are investigated using magneto-optic Kerr effect (MOKE) and X-ray photoemission spectroscopy (XPS). A magnetization hysteresis loop is found after nominal 10 Å of Fe deposition on MoS2 at room temperature. The thickness-dependent MOKE measurement evaluates that the magnetic dead layer (MDL) exists up to ≈2 Å of Fe on MoS2 due to the interaction between Fe and MoS2. XPS shows small peak shifting for Mo 3d and S 2p peaks toward lower binding energies with initial Fe deposition, indicating the modification of surface band bending. Fe 2p peaks for lower thickness of Fe are significantly broader than those for higher thickness, which is attributed to the coexistence of metallic and ionic Fe in the film. The presence of ionic Fe, localized at the interface, indicates strong interactions between Fe and MoS2, and the existence of chemical bonding at the interface is corroborated with the formation of MDL.
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U2 - 10.1002/pssb.202100124
DO - 10.1002/pssb.202100124
M3 - Article
AN - SCOPUS:85108835542
SN - 0370-1972
VL - 258
JO - Physica Status Solidi (B) Basic Research
JF - Physica Status Solidi (B) Basic Research
IS - 10
M1 - 2100124
ER -