Simulation of magnetic hysteresis loops and magnetic Barkhausen noise of α-iron containing nonmagnetic particles
- Tsinghua Univ., Beijing (China); Tsinghua Univ., Shenzhen (China)
- Tsinghua Univ., Beijing (China)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Here, the magnetic hysteresis loops and Barkhausen noise of a single α-iron with nonmagnetic particles are simulated to investigate into the magnetic hardening due to Cu-rich precipitates in irradiated reactor pressure vessel (RPV) steels. Phase field method basing Landau-Lifshitz-Gilbert (LLG) equation is used for this simulation. The results show that the presence of the nonmagnetic particle could result in magnetic hardening by making the nucleation of reversed domains difficult. The coercive field is found to increase, while the intensity of Barkhausen noise voltage is decreased when the nonmagnetic particle is introduced. Simulations demonstrate the impact of nucleation field of reversed domains on the magnetization reversal behavior and the magnetic properties.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1213575
- Report Number(s):
- PNNL-SA-113266; AAIDBI
- Journal Information:
- AIP Advances, Vol. 5, Issue 7; ISSN 2158-3226
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Fabrication of triple-layered bifurcated vascular scaffold with a certain degree of three-dimensional structure
|
journal | January 2018 |
Similar Records
Magnetization Reversal Process of Single Crystal α-Fe Containing a Nonmagnetic Particle
Magnetic Hardening from the Suppression of Domain Walls by Nonmagnetic Particles