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Segregation of Mn2+ dopants as interstitials in SrTiO3 grain boundaries

Publication ,  Journal Article
Yang, H; Kotula, PG; Sato, Y; Chi, M; Ikuhara, Y; Browning, ND
Published in: Materials Research Letters
January 1, 2014
Published version (DOI)

Mn-doped SrTiO3 shows promising magnetic and electrical properties, but the doping mechanism remains unclear. In this research Mn4+ is found to substitute Ti in bulk SrTiO3, but Mn2+ segregates inside grain boundaries at both Sr and interstitial sites. Mn interstitial doping has never been reported, but is found possible with the formation of Sr vacancies. This finding is significantly different from the amphoteric doping of Mn2+ substituting Sr and Mn4+ substituting Ti sites, therefore leads to different understanding on the defect mediated electrical and magnetic properties of transition metal-doped perovskites.

Duke Scholars

Miaofang Chi
Author Miaofang Chi Thomas Lord Department of Mechanical Engineering and Materia ...

Published In

Materials Research Letters

DOI

10.1080/21663831.2013.856815

EISSN

2166-3831

Publication Date

January 1, 2014

Volume

2

Issue

1

Start / End Page

16 / 22

Related Subject Headings

  • 4019 Resources engineering and extractive metallurgy
  • 4016 Materials engineering
 

Citation

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Yang, H., Kotula, P. G., Sato, Y., Chi, M., Ikuhara, Y., & Browning, N. D. (2014). Segregation of Mn2+ dopants as interstitials in SrTiO3 grain boundaries. Materials Research Letters, 2(1), 16–22. https://doi.org/10.1080/21663831.2013.856815
Yang, H., P. G. Kotula, Y. Sato, M. Chi, Y. Ikuhara, and N. D. Browning. “Segregation of Mn2+ dopants as interstitials in SrTiO3 grain boundaries.” Materials Research Letters 2, no. 1 (January 1, 2014): 16–22. https://doi.org/10.1080/21663831.2013.856815.
Yang H, Kotula PG, Sato Y, Chi M, Ikuhara Y, Browning ND. Segregation of Mn2+ dopants as interstitials in SrTiO3 grain boundaries. Materials Research Letters. 2014 Jan 1;2(1):16–22.
Yang, H., et al. “Segregation of Mn2+ dopants as interstitials in SrTiO3 grain boundaries.” Materials Research Letters, vol. 2, no. 1, Jan. 2014, pp. 16–22. Scopus, doi:10.1080/21663831.2013.856815.
Yang H, Kotula PG, Sato Y, Chi M, Ikuhara Y, Browning ND. Segregation of Mn2+ dopants as interstitials in SrTiO3 grain boundaries. Materials Research Letters. 2014 Jan 1;2(1):16–22.
Journal cover image

Published In

Materials Research Letters

DOI

10.1080/21663831.2013.856815

EISSN

2166-3831

Publication Date

January 1, 2014

Volume

2

Issue

1

Start / End Page

16 / 22

Related Subject Headings

  • 4019 Resources engineering and extractive metallurgy
  • 4016 Materials engineering