Oxygen vacancy enhanced room-temperature ferromagnetism in Sr 3SnO/c-YSZ/Si (001) heterostructures

Y. F. Lee, F. Wu, J. Narayan, J. Schwartz

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Abstract

The magnetic properties of Sr3SnO (SSO) epitaxial thin films prepared under various post-growth annealing treatments are reported. The SSO films are grown on cubic yttria-stabilized zirconia Si (001) platform by pulsed laser deposition. Post-growth vacuum annealing is found to enhance the room-temperature ferromagnetism (RTFM), whereas oxygen annealing reduces it. The results are explained through the oxygen vacancy constituted bound magnetic polarons (BMP) model. An empirical relationship between the extracted BMP concentration and the oxygen vacancy concentration is shown using X-ray photoelectron spectroscopy data. The results indicate a promising way to tune RTFM by manipulating oxygen vacancies and related defects.

Original languageEnglish (US)
Pages (from-to)7-13
Number of pages7
JournalMRS Communications
Volume4
Issue number1
DOIs
StatePublished - Apr 2014

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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