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Mobilio, S.
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Publications (4/4 displayed)
- 2011Structure and magnetism in compressed iron-cobalt alloyscitations
- 2010(2010). Microstructure and magnetic properties of colloidal cobalt nano-clusters.citations
- 2003Time-resolved X-ray powder diffraction on a three-way catalyst at the GILDA beamline.citations
- 2000Nanoclusters Formation in Ion Implanted Silicate Glasses
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article
Structure and magnetism in compressed iron-cobalt alloys
Abstract
Combined Co K-edge XANES-XMCD and XRD measurements were used to shed light on the magnetic and structural phase diagram of the Fe1-xCox alloy under HP in the Co-rich region (x epsilon 0.5). At 0.5x0.75, the alloy shows a pressure-induced structural/magnetic phase transition from bcc-FM to hcp-non-FM phase just like pure iron but at higher pressures. The x=0.9 sample has an fcc structure in the pressure range investigated but presents an FM to non-FM transition at P=64GPa, a significantly lower pressure compared with pure Co (predicted approximate to 120GPa), showing that Fe impurities strongly affect the HP Co response.