Electronic structure of the (Nd{sub 1−x}Dy{sub x}){sub 2}Fe{sub 14}B (0 ≤ x ≤ 1) system studied by X-ray photoelectron spectroscopy

Journal Article · Tue Sep 15 00:00:00 EDT 2015 · AIP Advances

DOI:https://doi.org/10.1063/1.4931920· OSTI ID:22492377

Wang, Jing; Liang, Le ^[1]; Yang, Bin ^[2]; Sun, Li-min ^[3]; Zhang, Lan-ting ^[1]; Hirano, Shin-ichi ^[4]

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1. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 (China)
2. Scientific Instruments Dept., Shimadzu China Co., LTD., Shenyang, 110001 (China)
3. Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai, 200240 (China)
4. Hirano Institute for Materials Innovation, Shanghai Jiao Tong University, Shanghai, 200240 (China)

Systematic characterization of electronic structures in the (Nd{sub 1−x}Dy{sub x}){sub 2}Fe{sub 14}B system, especially the 4f behavior, provides an insight to the physical nature of the evolution of magnetic properties. A series of X-ray photoelectron spectroscopy (XPS) core-level and valence-band spectra were used to study the electronic structures. It was found that substitution of Dy for Nd in Nd{sub 2}Fe{sub 14}B results in a nonlinear variation in the evolution of electronic structures. Only the finite coupling between the Nd 4f states and the Fe 3d states is found at both the Nd-rich regime and the Dy-rich regime. When the Dy concentration and the Nd concentration approach to be equal, a strong coupling between the Nd 4f states and the Fe 3d states is found, which results in a bonding state between them. Additionally, the 4f components in the (Nd{sub 1−x}Dy{sub x}){sub 2}Fe{sub 14}B system are ascribed to three parts: 1) the individual contribution of the Dy 4f states, which emerges just after the Dy-substitution; 2) the contribution of the coupling between the Nd 4f states and the Dy 4f states, which arises only when 0.4 ≤ x ≤ 0.6; 3) the associated contributions of the Nd 4f states and the Dy 4f states, where the contribution of the Nd 4f states and that of the Dy 4f states are prominent in the Nd-rich regime and Dy-rich regime, respectively.

• OSTI ID: 22492377
• Journal Information: AIP Advances, Journal Name: AIP Advances Journal Issue: 9 Vol. 5; ISSN AAIDBI; ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BOUND STATE
CONCENTRATION RATIO
COUPLING
DYSPROSIUM COMPOUNDS
ELECTRONIC STRUCTURE
IRON BORIDES
MAGNETIC PROPERTIES
NEODYMIUM COMPOUNDS
NONLINEAR PROBLEMS
VALENCE
VARIATIONS
X-RAY PHOTOELECTRON SPECTROSCOPY