Correlation of high temperature x-ray photoemission valence band spectra and conductivity in strained LaSrFeNi oxide on SrTiO3 (110)

A. Braun; X. Zhang; Y. Sun; U. Müller; Z. Liu; S. Erat; M. Ari; H. Grimmer; S. S. Mao; T. Graule

doi:10.1063/1.3174916

Correlation of high temperature x-ray photoemission valence band spectra and conductivity in strained LaSrFeNi oxide on SrTiO₃ (110)

A. Braun
, X. Zhang
, Y. Sun
, U. Müller
, Z. Liu
, S. Erat
, M. Ari
, H. Grimmer
, S. S. Mao
, T. Graule

Mechanical & Nuclear Engineering

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Reversible and irreversible discontinuities at around 573 and 823 K in the electric conductivity of a strained 175 nm thin film of (La_0.8Sr _0.2) 0.95 Ni_0.2Fe_0.8O_3-δ grown by pulsed laser deposition on SrTiO₃ (110) are reflected by valence band changes as monitored in photoemission and oxygen K -edge x-ray absorption spectra (XAS). The irreversible jump at 823 K is attributed to depletion of doped electron holes concomitant with reduction of Fe3+ toward Fe2+, as evidenced by oxygen and iron core level soft XAS, and possibly of a chemical origin, whereas the reversible jump at 573 K possibly originates from structural changes.

Original language	British English
Article number	022107
Journal	Applied Physics Letters
Volume	95
Issue number	2
DOIs	https://doi.org/10.1063/1.3174916
State	Published - 2009

Access to Document

10.1063/1.3174916

OpenUrl availability

Full text

Cite this

@article{571c29c371624d27bb3cf05c4a8e4e9f,

title = "Correlation of high temperature x-ray photoemission valence band spectra and conductivity in strained LaSrFeNi oxide on SrTiO3 (110)",

abstract = "Reversible and irreversible discontinuities at around 573 and 823 K in the electric conductivity of a strained 175 nm thin film of (La0.8Sr 0.2) 0.95 Ni0.2Fe0.8O3-δ grown by pulsed laser deposition on SrTiO3 (110) are reflected by valence band changes as monitored in photoemission and oxygen K -edge x-ray absorption spectra (XAS). The irreversible jump at 823 K is attributed to depletion of doped electron holes concomitant with reduction of Fe3+ toward Fe2+, as evidenced by oxygen and iron core level soft XAS, and possibly of a chemical origin, whereas the reversible jump at 573 K possibly originates from structural changes.",

author = "A. Braun and X. Zhang and Y. Sun and U. M{\"u}ller and Z. Liu and S. Erat and M. Ari and H. Grimmer and Mao, \{S. S.\} and T. Graule",

note = "Funding Information: Part of this research was carried out at the Stanford Synchrotron Radiation Lightsource, a national user facility operated by Stanford University on behalf of the U.S. Department of Energy, Office of Basic Energy Sciences. Funding by E.U. MIRG (Grant No. CT-2006-042095), Swiss NSF (Grant No. 200021-116688), and Erciyes University research fund, Contract No. FBA-07-041. The ALS is supported by the Director, Office of Science/BES, of the U.S. DoE, Grant No. DE-AC02-05CH11231.",

year = "2009",

doi = "10.1063/1.3174916",

language = "British English",

volume = "95",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "2",

}

TY - JOUR

T1 - Correlation of high temperature x-ray photoemission valence band spectra and conductivity in strained LaSrFeNi oxide on SrTiO3 (110)

AU - Braun, A.

AU - Zhang, X.

AU - Sun, Y.

AU - Müller, U.

AU - Liu, Z.

AU - Erat, S.

AU - Ari, M.

AU - Grimmer, H.

AU - Mao, S. S.

AU - Graule, T.

N1 - Funding Information: Part of this research was carried out at the Stanford Synchrotron Radiation Lightsource, a national user facility operated by Stanford University on behalf of the U.S. Department of Energy, Office of Basic Energy Sciences. Funding by E.U. MIRG (Grant No. CT-2006-042095), Swiss NSF (Grant No. 200021-116688), and Erciyes University research fund, Contract No. FBA-07-041. The ALS is supported by the Director, Office of Science/BES, of the U.S. DoE, Grant No. DE-AC02-05CH11231.

PY - 2009

Y1 - 2009

N2 - Reversible and irreversible discontinuities at around 573 and 823 K in the electric conductivity of a strained 175 nm thin film of (La0.8Sr 0.2) 0.95 Ni0.2Fe0.8O3-δ grown by pulsed laser deposition on SrTiO3 (110) are reflected by valence band changes as monitored in photoemission and oxygen K -edge x-ray absorption spectra (XAS). The irreversible jump at 823 K is attributed to depletion of doped electron holes concomitant with reduction of Fe3+ toward Fe2+, as evidenced by oxygen and iron core level soft XAS, and possibly of a chemical origin, whereas the reversible jump at 573 K possibly originates from structural changes.

AB - Reversible and irreversible discontinuities at around 573 and 823 K in the electric conductivity of a strained 175 nm thin film of (La0.8Sr 0.2) 0.95 Ni0.2Fe0.8O3-δ grown by pulsed laser deposition on SrTiO3 (110) are reflected by valence band changes as monitored in photoemission and oxygen K -edge x-ray absorption spectra (XAS). The irreversible jump at 823 K is attributed to depletion of doped electron holes concomitant with reduction of Fe3+ toward Fe2+, as evidenced by oxygen and iron core level soft XAS, and possibly of a chemical origin, whereas the reversible jump at 573 K possibly originates from structural changes.

UR - https://www.scopus.com/pages/publications/67650766640

U2 - 10.1063/1.3174916

DO - 10.1063/1.3174916

M3 - Article

AN - SCOPUS:67650766640

SN - 0003-6951

VL - 95

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 2

M1 - 022107

ER -

Correlation of high temperature x-ray photoemission valence band spectra and conductivity in strained LaSrFeNi oxide on SrTiO₃ (110)

Abstract

Access to Document

OpenUrl availability

Other files and links

Fingerprint

Cite this