Author/Authors :
Manaila، نويسنده , , R and Macovei، نويسنده , , D and Popescu، نويسنده , , R and Devenyi، نويسنده , , A and Jianu، نويسنده , , A and Vasile، نويسنده , , E and Barna، نويسنده , , P.B and Lلbلr، نويسنده , , J.L، نويسنده ,
Abstract :
An icosahedral (i) Al–Mn–Ce nanophase is formed in rapidly quenched alloys. Ce induces a gradual change of the six-dimensional (6D) lattice from a simple icosahedral (SI) to a face-centered icosahedral (FCI) symmetry with relaxation of lattice distortions. X-ray diffraction (XRD) and extended X-ray absorption fine structure (EXAFS) data support Ce location on FCI sites, although off-center positions are suggested.
