Spin-polarized electron momentum density distributions in Pd<inf>1-x</inf>Co<inf>x</inf>alloys
The spin-polarized momentum densities of disordered single-crystal Pd1-xCoxhave been studied using the magnetic Compton scattering technique, for the compositions x = 0.6 and 0.28. Magnetic Compton profiles have been measured along the three principle crystallographic directions in each sample, and...
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Main Authors: | , , , , , , , , , , |
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Format: | Article |
Published: |
2018
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Online Access: | https://repository.li.mahidol.ac.th/handle/123456789/20243 |
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Institution: | Mahidol University |
Summary: | The spin-polarized momentum densities of disordered single-crystal Pd1-xCoxhave been studied using the magnetic Compton scattering technique, for the compositions x = 0.6 and 0.28. Magnetic Compton profiles have been measured along the three principle crystallographic directions in each sample, and compared with theoretical profiles calculated using the Korringa-Kohn-Rostoker coherent-potential approximation method. The calculated and measured spin-polarized momentum distributions, as revealed by their magnetic Compton profiles, are in excellent agreement. However the calculated spin moment for the composition with x = 0.6 is some 10% smaller than that measured experimentally, and for x = 0.28, the deviation becomes 15%. These differences are attributed to the effect of order in the samples, which becomes increasingly important in the Pd-rich side of the phase diagram. The orbital component to the magnetization has been determined as 0.08 and 0.18μBfor Pd0.4Co0.6and Pd0.72Co0.28, respectively. |
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