Strain Driven Phase Decomposition in Ion-Beam Sputtered Pr_1−XCa_XMnO₃ Films

Table 2

Lattice parameters , , and for MnO₃ (a) according to [15]. is defined as the mean value of the pseudocubic lattice constant, that is, the mean value of /2, /2 and /2. The lattice mismatch to STO, Pt, and MgO deduced from the pseudocubic lattice constant is also included using = 0.3905 nm, = 0.3923 nm, and = 0.4213 nm. We have also used the atom positions in the unit cell from [15] to calculate the intensity ratios by means of the CaRIne software (b).

(a)

	[nm]	[nm]	[nm]	[nm]	[%]	[%]	[%]
0.0	0.5445	0.5809	0.7585	0.3917	0.30	−0.16	−7.03
0.2	0.5442	0.5552	0.7657	0.3867	−0.96	−1.42	−8.20
0.3	0.5426	0.5478	0.7679	0.3850	−1.41	−1.86	−8.62
0.4	0.5415	0.5438	0.7664	0.3835	−1.78	−2.23	−8.96
0.5	0.5395	0.5430	0.7612	0.3814	−2.34	−2.78	−9.48

(b)

()	[nm]	[%]
(112)	0.2720	100.0
(200)	0.2713	44.9
(220)	0.1928	13.7
(004)	0.1920	13.4