Optimization of Pr0.9Ca0.1MnO3 thin films with varying in-situ oxygen annealing treatments

T. Elovaara, H. Huhtinen, S. Majumdar, P. Paturi

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

The influence of in situ oxygen annealings on narrow electronic bandwidth Pr0.9Ca0.1MnO3 films are investigated in the complex phase separation region. Measurements by x-ray diffractometry and SQUID magnetometry reveal that relatively high deposition temperature at 700 °C relaxes the lattice by twin boundaries while the lower deposition temperature at 500 °C with higher post-annealing temperature of 700 °C relaxes the substrate induced strain via oxygen absorption and makes the film structure more homogeneous. This behaviour is clearly supported by the decrease of ferromagnetic ordering due to decrease of Mn3+ ions in films oxygen annealed at high temperatures and this phenomenon is widely discussed with the models of double-exchange interaction, trapping of carriers in the oxygen vacancies and formation of magnetic polarons. The results show unambiguously that because the oxygen content tailors many physical properties dramatically, the annealing treatments are in very important role when optimizing these materials for future applications.
Original languageEnglish
Article number15011
Number of pages4
JournalEPJ Web of Conferences
Volume40
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed
EventJoint European Magnetic Symposia, JEMS 2012 - Parma, Italy
Duration: 9 Sep 201214 Sep 2012

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optimization
annealing
oxygen
thin films
polarons
magnetic measurement
temperature
physical properties
trapping
bandwidth
electronics
ions
x rays
interactions

Cite this

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title = "Optimization of Pr0.9Ca0.1MnO3 thin films with varying in-situ oxygen annealing treatments",
abstract = "The influence of in situ oxygen annealings on narrow electronic bandwidth Pr0.9Ca0.1MnO3 films are investigated in the complex phase separation region. Measurements by x-ray diffractometry and SQUID magnetometry reveal that relatively high deposition temperature at 700 °C relaxes the lattice by twin boundaries while the lower deposition temperature at 500 °C with higher post-annealing temperature of 700 °C relaxes the substrate induced strain via oxygen absorption and makes the film structure more homogeneous. This behaviour is clearly supported by the decrease of ferromagnetic ordering due to decrease of Mn3+ ions in films oxygen annealed at high temperatures and this phenomenon is widely discussed with the models of double-exchange interaction, trapping of carriers in the oxygen vacancies and formation of magnetic polarons. The results show unambiguously that because the oxygen content tailors many physical properties dramatically, the annealing treatments are in very important role when optimizing these materials for future applications.",
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Optimization of Pr0.9Ca0.1MnO3 thin films with varying in-situ oxygen annealing treatments. / Elovaara, T.; Huhtinen, H.; Majumdar, S.; Paturi, P.

In: EPJ Web of Conferences, Vol. 40, 15011, 2013.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Optimization of Pr0.9Ca0.1MnO3 thin films with varying in-situ oxygen annealing treatments

AU - Elovaara, T.

AU - Huhtinen, H.

AU - Majumdar, S.

AU - Paturi, P.

PY - 2013

Y1 - 2013

N2 - The influence of in situ oxygen annealings on narrow electronic bandwidth Pr0.9Ca0.1MnO3 films are investigated in the complex phase separation region. Measurements by x-ray diffractometry and SQUID magnetometry reveal that relatively high deposition temperature at 700 °C relaxes the lattice by twin boundaries while the lower deposition temperature at 500 °C with higher post-annealing temperature of 700 °C relaxes the substrate induced strain via oxygen absorption and makes the film structure more homogeneous. This behaviour is clearly supported by the decrease of ferromagnetic ordering due to decrease of Mn3+ ions in films oxygen annealed at high temperatures and this phenomenon is widely discussed with the models of double-exchange interaction, trapping of carriers in the oxygen vacancies and formation of magnetic polarons. The results show unambiguously that because the oxygen content tailors many physical properties dramatically, the annealing treatments are in very important role when optimizing these materials for future applications.

AB - The influence of in situ oxygen annealings on narrow electronic bandwidth Pr0.9Ca0.1MnO3 films are investigated in the complex phase separation region. Measurements by x-ray diffractometry and SQUID magnetometry reveal that relatively high deposition temperature at 700 °C relaxes the lattice by twin boundaries while the lower deposition temperature at 500 °C with higher post-annealing temperature of 700 °C relaxes the substrate induced strain via oxygen absorption and makes the film structure more homogeneous. This behaviour is clearly supported by the decrease of ferromagnetic ordering due to decrease of Mn3+ ions in films oxygen annealed at high temperatures and this phenomenon is widely discussed with the models of double-exchange interaction, trapping of carriers in the oxygen vacancies and formation of magnetic polarons. The results show unambiguously that because the oxygen content tailors many physical properties dramatically, the annealing treatments are in very important role when optimizing these materials for future applications.

U2 - 10.1051/epjconf/20134015011

DO - 10.1051/epjconf/20134015011

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JO - EPJ Web of Conferences

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