3.2 Structural characterization
The XRD results of the La0.7Sr0.3MnO3 nanoparticles prepared
by thermal decomposition of the precursor A and B
at 800◦C for 6 h are shown in Fig. 2. Both samples show
a main phase of LSMO, but the sample prepared using precursor
B contains a large amount of impurities La(OH)3 and
SrCO3 (Fig. 2(b)). In this study, we therefore focus on the
LSMO nanoparticles prepared using the precursor A. Figure
3 shows the XRD results of the samples prepared by
thermal decomposition of the precursor A in air at 600, 700,
800, 900, and 1000◦C for 6 hours. The presence of impurities
phases such as SrCO3 (JCPD no. 05-0418), La2O2CO3
(JCPD no. 37-0804) and La(OH)3 (JCPD no. 36-1481)
was observed in the samples thermally decomposed below
800◦C, while above 800◦C the samples exhibited a pure
phase of LSMO. The transformation of the crystal structure
from cubic to rhombohedral occurred at and above 900◦C.
3.2 Structural characterization
The XRD results of the La0.7Sr0.3MnO3 nanoparticles prepared
by thermal decomposition of the precursor A and B
at 800◦C for 6 h are shown in Fig. 2. Both samples show
a main phase of LSMO, but the sample prepared using precursor
B contains a large amount of impurities La(OH)3 and
SrCO3 (Fig. 2(b)). In this study, we therefore focus on the
LSMO nanoparticles prepared using the precursor A. Figure
3 shows the XRD results of the samples prepared by
thermal decomposition of the precursor A in air at 600, 700,
800, 900, and 1000◦C for 6 hours. The presence of impurities
phases such as SrCO3 (JCPD no. 05-0418), La2O2CO3
(JCPD no. 37-0804) and La(OH)3 (JCPD no. 36-1481)
was observed in the samples thermally decomposed below
800◦C, while above 800◦C the samples exhibited a pure
phase of LSMO. The transformation of the crystal structure
from cubic to rhombohedral occurred at and above 900◦C.
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