Thesis - Oztek_Muzaffer_T_200508_MA

sample was LaNi 5 . This may indicate that the LaNi 5 was not in its normal crystalline
form and the energy from the X-ray beam was inducing changes in the crystal phase.
e
Intensity (arb. units)
d
c
b
(111)
a
(101)
(110)
(200)
(002)
(112)
(211)
(202)
(300)
(301)
(220)
20 30 40 50 60 70 80
2-Theta (deg.)
a
b, c, d, e
LaNi 5 (reference)
non-milled sample
Figure 37. XRD spectra of LaNi 5 .
LaNi 5 was ground with mortar and pestle in the glove box. The three consecutive
scans in the XRD (Figure 38) resulted in spectra that involved peaks that matched with
the reported peak positions of LaNi 5 . However, the relative intensity of the observed
peaks did not match with the reported ratios, and, inconsistencies within the spectra were
observed.
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