Superconducting (Rb,Ba)BiO3 thin films grown by molecular beam epitaxy

E. S. Hellman; E. H. Hartford; T. T.M. Palstra

doi:10.1016/0921-4534(89)91183-0

Superconducting (Rb,Ba)BiO₃ thin films grown by molecular beam epitaxy

E. S. Hellman^*, E. H. Hartford, T. T.M. Palstra

^*Corresponding author for this work

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

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Abstract

The simple cubic perovskite (Rb,Ba)BiO₃ can be grown by molecular beam epitaxy using an RF plasma oxygen source. Films with superconducting onsets in resistivity as high as 27K are obtained without annealing. The epitaxy proceeds in the normal (1 0 0) orientation on (1 0 0) SrTiO₃, despite a 10% lattice mis-match. (1 1 0) epitaxy is obtained on (1 0 0) MgO substrates, despite the good lattice match for (1 0 0) growth. The films with the lowest normal state resistivity are those grown on SrTiO₃ at 300±10°C and are Bi deficient despite excess Bi flux during growth. The temperature dependence of the resistivity for these films is metallic down to T_c. H_c2 for a T_c=20K film is 10±T.

Original language	English
Pages (from-to)	633-634
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	162-164
Issue number	PART 1
DOIs	https://doi.org/10.1016/0921-4534(89)91183-0
Publication status	Published - 1 Jan 1989
Externally published	Yes

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title = "Superconducting (Rb,Ba)BiO3 thin films grown by molecular beam epitaxy",

abstract = "The simple cubic perovskite (Rb,Ba)BiO3 can be grown by molecular beam epitaxy using an RF plasma oxygen source. Films with superconducting onsets in resistivity as high as 27K are obtained without annealing. The epitaxy proceeds in the normal (1 0 0) orientation on (1 0 0) SrTiO3, despite a 10% lattice mis-match. (1 1 0) epitaxy is obtained on (1 0 0) MgO substrates, despite the good lattice match for (1 0 0) growth. The films with the lowest normal state resistivity are those grown on SrTiO3 at 300±10°C and are Bi deficient despite excess Bi flux during growth. The temperature dependence of the resistivity for these films is metallic down to Tc. Hc2 for a Tc=20K film is 10±T.",

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N2 - The simple cubic perovskite (Rb,Ba)BiO3 can be grown by molecular beam epitaxy using an RF plasma oxygen source. Films with superconducting onsets in resistivity as high as 27K are obtained without annealing. The epitaxy proceeds in the normal (1 0 0) orientation on (1 0 0) SrTiO3, despite a 10% lattice mis-match. (1 1 0) epitaxy is obtained on (1 0 0) MgO substrates, despite the good lattice match for (1 0 0) growth. The films with the lowest normal state resistivity are those grown on SrTiO3 at 300±10°C and are Bi deficient despite excess Bi flux during growth. The temperature dependence of the resistivity for these films is metallic down to Tc. Hc2 for a Tc=20K film is 10±T.

AB - The simple cubic perovskite (Rb,Ba)BiO3 can be grown by molecular beam epitaxy using an RF plasma oxygen source. Films with superconducting onsets in resistivity as high as 27K are obtained without annealing. The epitaxy proceeds in the normal (1 0 0) orientation on (1 0 0) SrTiO3, despite a 10% lattice mis-match. (1 1 0) epitaxy is obtained on (1 0 0) MgO substrates, despite the good lattice match for (1 0 0) growth. The films with the lowest normal state resistivity are those grown on SrTiO3 at 300±10°C and are Bi deficient despite excess Bi flux during growth. The temperature dependence of the resistivity for these films is metallic down to Tc. Hc2 for a Tc=20K film is 10±T.

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Superconducting (Rb,Ba)BiO₃ thin films grown by molecular beam epitaxy

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