A Systematic Investigation on Magnetism and Phase Stability of Cobalt
-
Fang-Guang Kuang
and
Shu-Ying Kang
Using the first-principles plan-wave pseudo-potential method, a systematic investigation on structural property, magnetism, and pressure-induced phase transitions of cobalt is carried out. Cobalt with our hcp (α), fcc (β), bcc (γ), and epsilon (ε) phases both in ferromagnetic (FM) and nonmagnetic (NM) states is considered. Issues of fitting equation of states in the energy volume data points containing magnetism are discussed. Our results reveal two stable phase transition points, namely, from FM β-phase to FM a-phase at -28:2 GPa and from FM a-phase to NM β-phase at 123:7 GPa, which are consistent with previous experimental predictions. The meta-stable magnetic transformation points from FM to NM state for a, b, and e structures are 135:7 GPa, 84:0 GPa, and 168:7 GPa, respectively. Furthermore, both FM γ-phase and FM ε-phase undergo a meta-stable transformation to NM b-phase at 25:0 GPa and 42:3 GPa, respectively.
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Articles in the same Issue
- Invariance, Conservation Laws, and Exact Solutions of the Nonlinear Cylindrical Fin Equation
- Influence of Wall Properties on the Peristaltic Flow of a Nanofluid in View of the Exact Solutions: Comparisons with Homotopy Analysis Method
- Analyses of S-Box in Image Encryption Applications Based on Fuzzy Decision Making Criterion
- Theoretical Study of the Electronic Spectrum of Disulfur Monoxide
- The Gravitational Origin of the Higgs Boson Mass
- Optimal Campaign Strategies in Fractional-Order Smoking Dynamics
- First Exact Solutions for Flows of Rate Type Fluids in a Circular Duct that Applies a Constant Couple to the Fluid
- Multi-Soliton Solutions and Interaction for a Generalized Variable- Coefficient Calogero–Bogoyavlenskii–Schiff Equation
- Stego Optical Encryption Based on Chaotic Baker’s Map Transformation
- A Systematic Investigation on Magnetism and Phase Stability of Cobalt
- A Comparative Study Between two Explicit and Minimal Strategies for the Case of Magnetohydrodynamical Falkner–Skan Flow over a Permeable Wall
- Regarding ‘Information Preservation and Weather Forecasting for Black Holes’ by S. W. Hawking
