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Investigation of Optimal Growth Conditions of La 0.7 Sr 0.3 MnO 3 –Bi 2 Sr 2 Ca 1 Cu 2 O 8 Heterostructures
Author(s) -
Daniel Paul Joseph,
Lin Jauyn Grace
Publication year - 2013
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.12056
Subject(s) - materials science , superconductivity , annealing (glass) , curie temperature , condensed matter physics , ferromagnetism , heterojunction , transition temperature , analytical chemistry (journal) , metallurgy , chemistry , optoelectronics , physics , chromatography
The deposition conditions of less explored La 0.7 Sr 0.3 MnO 3 ( LSMO ) and Bi 2 Sr 2 Ca 1 Cu 2 O 8 ( Bi ‐2212) heterostructures are investigated in terms of two different deposition orders. One is in the order of Bi ‐2212/ LSMO and the other is LSMO / Bi ‐2212. The experimental results indicate the metal‐insulator transition ( T MI ) and Curie temperature ( T Curie ) of LSMO as well as the superconducting critical transition ( T C ) of the Bi ‐2212 to be very sensitive to the order of deposition. In Bi ‐2212/ LSMO , due to factors such as strain, roughness, and degree of oxygenation, superconductivity is not stabilized to interact with LSMO . Whereas the LSMO / Bi ‐2212 order of deposition displays both superconductivity and ferromagnetic behavior for a single post annealing condition. In LSMO / Bi ‐2212, depositing Bi ‐2212 as a top layer and post annealing in air is crucial to achieve optimal carrier concentration for exhibiting high T C .