MANFRINETTI , Pietro

We report on the synthesis and crystal structure of the new family of rare earth ternary equiatomic RZnSn compounds. The phases are found to form for R = La to Nd, Sm, Gd to Lu, Y, all belonging to the hexagonal hP12-P63/mmc YPtAs structure type. The lattice parameters, as obtained by the Guinier method on polycrystalline samples, vary...

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The synthesis and crystal structure of the new family of rare earth ternary equiatomic RZnGe phases are reported. The compounds are found to form for R = La to Nd, Sm, Gd to Tm, Y, all crystallizing with the hexagonal hP12-P63/mmc YPtAs structure type, a four-layers superstructure derivative of the AlB2 type. No formation of the equiatomic...

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Phases YbZn1-xAlx, YbZn2-xAlx and YbZn3-xAlx were studied by electron microprobe analysis and X-ray single crystal and powder methods. The compound YbZn0.8Al0.2 crystallizes with the CsCl-type, a=3.635(2) Å. Four phases were investigated by single crystal X-ray diffraction: YbZn0.996(6)Al1.004(6), MgNi2-type, P63/mmc, a=5.573(1), c=18.051(3) Å,...

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Sono passati in rassegna i diversi metodi di caratterizzazione archeometrica dei materiali metallici. Sono riportati numerosi esempi di applicazione a reperti metallici liguri.

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