New non-superconducting layered Bi-oxide phases of formula Bi2M3Co2Oy containing Co instead of Cu

J. M. Tarascon, R. Ramesh, P. Barboux, M. S. Hedge, G. W. Hull, L. H. Greene, M. Giroud, Y. LePage, W. R. McKinnon, J. V. Waszcak, Lynn Schneemeyer

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Abstract

We report the cationic substitution of Cu by Co within the 85K Bi based high Tc oxides to produce new phases of general formula Bi2M3Co2Oy with M = Ca, Sr and Ba. Single crystals of these phases, grown using Co3O4 (excess) flux, were investigated for their structural, magnetic and electrical properties. The subcell appears similar to that of Bi2Sr2CaCu2Oy phase but the superstructure is more complicated due to the presence of a more complex incommensurate structural modulation. The substitution of Cu by Co is accompanied by an uptake of additional oxygen. With M = Sr or Ca, the compounds are semiconductors, whereas when M = Ba the compound is metallic above 100K, and semiconducting below 100K. The magnetic susceptibility varies little with temperature, and shows no magnetic transitions. Photoemission measurements show that Co is in a + 3 oxidation state with a low spin configuration.

Original languageEnglish
Pages (from-to)663-668
Number of pages6
JournalSolid State Communications
Volume71
Issue number8
DOIs
StatePublished - 1 Jan 1989

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Oxides
Substitution reactions
substitutes
Metallic compounds
oxides
Photoemission
Magnetic susceptibility
Structural properties
Magnetic properties
Electric properties
photoelectric emission
electrical properties
Modulation
Single crystals
Semiconductor materials
Oxygen
Fluxes
magnetic properties
magnetic permeability
modulation

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Tarascon, J. M. ; Ramesh, R. ; Barboux, P. ; Hedge, M. S. ; Hull, G. W. ; Greene, L. H. ; Giroud, M. ; LePage, Y. ; McKinnon, W. R. ; Waszcak, J. V. ; Schneemeyer, Lynn. / New non-superconducting layered Bi-oxide phases of formula Bi2M3Co2Oy containing Co instead of Cu. In: Solid State Communications. 1989 ; Vol. 71, No. 8. pp. 663-668.
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abstract = "We report the cationic substitution of Cu by Co within the 85K Bi based high Tc oxides to produce new phases of general formula Bi2M3Co2Oy with M = Ca, Sr and Ba. Single crystals of these phases, grown using Co3O4 (excess) flux, were investigated for their structural, magnetic and electrical properties. The subcell appears similar to that of Bi2Sr2CaCu2Oy phase but the superstructure is more complicated due to the presence of a more complex incommensurate structural modulation. The substitution of Cu by Co is accompanied by an uptake of additional oxygen. With M = Sr or Ca, the compounds are semiconductors, whereas when M = Ba the compound is metallic above 100K, and semiconducting below 100K. The magnetic susceptibility varies little with temperature, and shows no magnetic transitions. Photoemission measurements show that Co is in a + 3 oxidation state with a low spin configuration.",
author = "Tarascon, {J. M.} and R. Ramesh and P. Barboux and Hedge, {M. S.} and Hull, {G. W.} and Greene, {L. H.} and M. Giroud and Y. LePage and McKinnon, {W. R.} and Waszcak, {J. V.} and Lynn Schneemeyer",
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Tarascon, JM, Ramesh, R, Barboux, P, Hedge, MS, Hull, GW, Greene, LH, Giroud, M, LePage, Y, McKinnon, WR, Waszcak, JV & Schneemeyer, L 1989, 'New non-superconducting layered Bi-oxide phases of formula Bi2M3Co2Oy containing Co instead of Cu', Solid State Communications, vol. 71, no. 8, pp. 663-668. https://doi.org/10.1016/0038-1098(89)91813-9

New non-superconducting layered Bi-oxide phases of formula Bi2M3Co2Oy containing Co instead of Cu. / Tarascon, J. M.; Ramesh, R.; Barboux, P.; Hedge, M. S.; Hull, G. W.; Greene, L. H.; Giroud, M.; LePage, Y.; McKinnon, W. R.; Waszcak, J. V.; Schneemeyer, Lynn.

In: Solid State Communications, Vol. 71, No. 8, 01.01.1989, p. 663-668.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - New non-superconducting layered Bi-oxide phases of formula Bi2M3Co2Oy containing Co instead of Cu

AU - Tarascon, J. M.

AU - Ramesh, R.

AU - Barboux, P.

AU - Hedge, M. S.

AU - Hull, G. W.

AU - Greene, L. H.

AU - Giroud, M.

AU - LePage, Y.

AU - McKinnon, W. R.

AU - Waszcak, J. V.

AU - Schneemeyer, Lynn

PY - 1989/1/1

Y1 - 1989/1/1

N2 - We report the cationic substitution of Cu by Co within the 85K Bi based high Tc oxides to produce new phases of general formula Bi2M3Co2Oy with M = Ca, Sr and Ba. Single crystals of these phases, grown using Co3O4 (excess) flux, were investigated for their structural, magnetic and electrical properties. The subcell appears similar to that of Bi2Sr2CaCu2Oy phase but the superstructure is more complicated due to the presence of a more complex incommensurate structural modulation. The substitution of Cu by Co is accompanied by an uptake of additional oxygen. With M = Sr or Ca, the compounds are semiconductors, whereas when M = Ba the compound is metallic above 100K, and semiconducting below 100K. The magnetic susceptibility varies little with temperature, and shows no magnetic transitions. Photoemission measurements show that Co is in a + 3 oxidation state with a low spin configuration.

AB - We report the cationic substitution of Cu by Co within the 85K Bi based high Tc oxides to produce new phases of general formula Bi2M3Co2Oy with M = Ca, Sr and Ba. Single crystals of these phases, grown using Co3O4 (excess) flux, were investigated for their structural, magnetic and electrical properties. The subcell appears similar to that of Bi2Sr2CaCu2Oy phase but the superstructure is more complicated due to the presence of a more complex incommensurate structural modulation. The substitution of Cu by Co is accompanied by an uptake of additional oxygen. With M = Sr or Ca, the compounds are semiconductors, whereas when M = Ba the compound is metallic above 100K, and semiconducting below 100K. The magnetic susceptibility varies little with temperature, and shows no magnetic transitions. Photoemission measurements show that Co is in a + 3 oxidation state with a low spin configuration.

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