Magnetic Susceptibility of High-Purity Molybdenum: Role of Trace Impurities and Theoretical Modeling
In this study, a modified Curie–Weiss model was established for the magnetic susceptibility of high-purity molybdenum and Mo–La alloy powders. The elemental composition was analyzed by GDMS, and combined with the M–T and M–H data measured by SQUID, the temperature-independent contributions of weakly magnetic elements such as La and the paramagnetic contributions of impurity ions such as Fe, Co, and Ni were distinguished. Based on the parameters obtained from the nonlinear least squares fitting, the deviation between the magnetic susceptibility at room temperature calculated by the model and the experimental value was within 5%. The results show that this model can reasonably describe the influence of trace impurities on the magnetic susceptibility of the system and provides an effective method for the magnetic prediction of high-purity metal powders.
Authors
- Tao Liu (ORCID: https://orcid.org/0000-0002-4202-8218)
- Likui Ning (ORCID: https://orcid.org/0000-0002-4800-6669)
- Dan Jia (ORCID: https://orcid.org/0000-0003-3104-5124)
- Xin Xin (ORCID: https://orcid.org/0000-0002-6888-5218)
- Chao Wang (ORCID: https://orcid.org/0000-0002-3378-6594)
- Siyuan Ma (ORCID: https://orcid.org/0000-0002-5924-3686)
- Enze Liu (ORCID: https://orcid.org/0000-0003-3455-408X)
- Zheng Tan (ORCID: https://orcid.org/0000-0003-2740-1229)
- Meng Li (ORCID: https://orcid.org/0000-0002-5879-1197)
Institutions
- University of Science and Technology of China (CN)
- Chinese Academy of Sciences (CN)
- Dongfeng Motor Group (China) (CN)
Publication Details
- Journal
- Magnetochemistry
- Published
- 2025-11-11
- DOI
- https://doi.org/10.3390/magnetochemistry11110098
- Primary Topic
- High-pressure geophysics and materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Key Research and Development Program of China