XPS study of PrAlO3–PrAl11O18 and PrAlO3–Pr2O3 eutectics

Kruczek, M.; Talik, E.; Pawlak, Dorota A.; Kolodziejak, Katarzyna; Łukasiewicz, T.

doi:10.1016/j.jallcom.2006.08.361

Cited by 17 publications

(13 citation statements)

References 8 publications

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“…5) of PrAlO 3 can be compared to that observed for Pr 2 O 3 [11]. The complex shape originates from the simultaneous effect of solid state hybridization and intra-atomic electrostatic coupling between 3d hole and outer unpaired 4f electrons [23].…”

Section: Resultsmentioning

confidence: 94%

“…4a, 4b and Fig. 5, have been deconvoluted [11] 932 Table 2 [22]. The monocrystalline compound cited in the Table 2 was obtained by the Czochralski method [11].…”

Section: Resultsmentioning

confidence: 99%

“…5, have been deconvoluted [11] 932 Table 2 [22]. The monocrystalline compound cited in the Table 2 was obtained by the Czochralski method [11]. The XPS binding energies of the Pr3d are almost the same for both samples, while the changes in binding energies for the Al2p and O1s are observed and may be related to the presence of Mn in the Al positions.…”

Section: Resultsmentioning

confidence: 99%

“…The single crystal of the PrAlO 3 compound has been grown by the Czochralski method [8,10] and its electronic structure was investigated [11]. It was shown that the as-grown crystal had a brown colour, similar to that of the mixed valence praseodymium oxide, Pr 6 O 11 .…”

Section: Introductionmentioning

confidence: 99%

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Magnetic properties of manganese doped PrAlO3 monocrystalline fibres

Guzik

Talik

Pajączkowska

et al. 2014

Materials Science-Poland

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Monocrystalline fibres of undoped PrAlO 3 and PrAlO 3 :0.1 Mn, have been grown by the pulling-down method under nitrogen atmosphere. The as-grown crystal doped with Mn had a visible brown core surrounded by a green ring, whereas this effect was weaker for the undoped PrAlO 3 . A coloration of the brown core was caused by a presence of Pr 4+ ions. The presence of the Pr 4+ ions was confirmed by XPS and magnetic studies. The XPS chemical analysis showed the increased concentration of oxygen in the crystals with the brown core. The most probable valency of manganese is Mn 4+ . It is located in Al 3+ sites.

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Section: Resultsmentioning

confidence: 94%

“…4a, 4b and Fig. 5, have been deconvoluted [11] 932 Table 2 [22]. The monocrystalline compound cited in the Table 2 was obtained by the Czochralski method [11].…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Magnetic properties of manganese doped PrAlO3 monocrystalline fibres

Guzik

Talik

Pajączkowska

et al. 2014

Materials Science-Poland

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“…The crystals of Pr x La 1−x AlO 3 solid solution grown by the Czochralski method [6] have different coloration: dark brown colour is probably a result of presence of Pr 4+ ions [1,7,8], light green colour is typical for Pr 3+ ions and brownish-red coloration especially in LaAlO 3 crystal is probably due to the colour centres [9]. Recently, the X-ray photoelectron spectroscopy (XPS) was used to study the electronic structure of PrAlO 3 single crystals before and after thermal treatment [10]. The as-grown PrAlO 3 single crystals grown by the Czochralski method are brown coloured and they change their colour to green after annealing in the reducing atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Electronic structure of Pr_x La_1‐xAlO₃ solid solution

Szubka

Talik

Molak

et al. 2010

Cryst. Res. Technol.

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The crystals of Prx La1−xAlO3 solid solution grown by the Czochralski method were examined by X‐ray photoelectron spectroscopy. The electric conductivity was measured at high temperature range. The composition of the Prx La1−xAlO3+xcrystals obtained with XPS analysis exhibited an increased content of oxygen in comparison to the nominal value. The praseodymium valence may influence the coloration of the Prx La1−xAlO3 crystals. In the dark brown colour Pr0.40La0.60AlO3 sample with the highest amount of oxygen the 3d4f1 satellite lines have the highest intensity and were attributed to presence of Pr4+ ions. The semiconducting properties of the Prx La1−xAlO3 single crystals correspond to the electronic structure determined with the XPS measurements and to the deduced occurrence of defects. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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