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  Cation distributions and possible phase separation in Tl2Ba2CuO6+δ from synchrotron powder x-ray diffraction

Aranda, M., Sinclair, D., Attfield, J., & Mackenzie, A. P. (1995). Cation distributions and possible phase separation in Tl2Ba2CuO6+δ from synchrotron powder x-ray diffraction. Physical Review B, 51(18), 12747-12753. doi:10.1103/PhysRevB.51.12747.

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 Creators:
Aranda, M.A.G.1, Author
Sinclair, D.C.1, Author
Attfield, J.P.1, Author
Mackenzie, A. P.2, Author              
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1external, ou_persistent22              
2External Organizations, ou_persistent22              

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 Abstract: Orthorhombic and tetragonal Tl2Ba2CuO6+δ (Tl-2201) samples have been studied using resonant synchrotron x-ray powder diffraction data at energies just below the Cu K and Tl LIII absorption edges. The resonant contributions enable us to demonstrate that Cu substitutes at the Tl site; the tetragonal structure is stabilized by a higher (5.5%) degree of substitution than the orthorhombic (<1%) material, in excellent agreement with electron probe microanalysis results. A slight splitting of some diffraction peaks of oxygen-rich orthorhombic Tl-2201 is consistent with a phase separation due to the segregation of interstitial oxygens.

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 Dates: 1995-05-01
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: ISI: A1995QZ33800074
DOI: 10.1103/PhysRevB.51.12747
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Title: Physical Review B
  Other : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 51 (18) Sequence Number: - Start / End Page: 12747 - 12753 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008