Journal of Spectroscopy / 2013 / Article / Tab 1 / Research Article
XPS Study of Mechanically Activated YBa2 Cu3 O6+δ and NdBa2 Cu3 O6+δ Table 1 Phase composition, lattice parameters, and the size of coherent scattering regions (
) for YBa
2 Cu
3 O
6+δ and NdBa
2 Cu
3 O
6+δ before and after mechanical treatment.
Crystallographic parameters Milling duration in AGO-2 (1)
powders 0 s (sample Y-0) 30 s (sample Y-0.5) 2 min (sample Y-2) 10 min (sample Y-10) The main phase—orthorhombic S.G. Pmmm
3.8208(3) 3.8218(3) 3.8287(10) 3.8344(10)
3.8884(5) 3.8893(5) 3.8938(15) 3.8879(15)
11.6809(11) 11.6793(12) 11.6739(33) 11.6663(31)
173.541(53) 173.599(55) 174.036(161) 173.919(158) Impurity, mass% — ~5%
~5%
~7%
, nm 167 57 25 20 (2)
powders 0 s (sample N-0) 30 s (sample N-0.5) 2 min (sample N-2) 10 min (sample N-10) The main phase—orthorhombic S.G. Pmmm
3.8677(1) 3.8731(3) 3.8727(12) 3.8754(12)
3.9202(1) 3.9206(10) 3.9225(14) 3.9161(15)
11.7612(3) 11.7622(24) 11.7630(39) 11.7661(24)
178.328(6) 178.608(118) 178.688(178) 178.564(212) Impurity, mass% ~3%
— — —
, HM 179.2 32.5 22.9 16.9