Effect of Al Substitution on the Electronic and Magnetic Properties of GdCo_5

• Authors: A. Szajek , W. Malinowski
• Languages of publication: EN

Abstracts

EN

Experimental data show that aluminium doped RCo_5 systems crystallize in CaCu_5-type structure for most of the rare-earth elements (R). Al impurities randomly occupy one of the two possible positions (2c and 3g) and there is a critical concentration of Al, x_c=2.0, for RCo_{5-x}Al_x when the Co sublattice becomes nonmagnetic. The ab initio self-consistent calculations show strong dependence of magnetic properties of GdCo_{5-x}Al_x on concentration of Al and position of the impurities in the unit cell, furthermore to fulfil experimental observation of existence of critical concentration, x_c=2.0, the Al impurities should prefer 3g positions otherwise the magnetic moments on Co atoms do not vanish.

Keywords

EN

71.20.-b; 71.20.Eh

Discipline

• 71.20.-b: Electron density of states and band structure of crystalline solids
• 71.20.Eh: Rare earth metals and alloys

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2002
• Volume: 101
• Issue: 4
• Pages: 525-536

Dates

published

2002-04

received

2001-09-19

(unknown)

2002-02-07

Contributors

author

A. Szajek

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

W. Malinowski

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

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Identifiers

DOI

10.12693/APhysPolA.101.525