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; L. F. Schneemeyer

doi:10.1016/0038-1098(89)91813-9

New non-superconducting layered Bi-oxide phases of formula Bi₂M₃Co₂O_y 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, L. F. Schneemeyer

Chemistry and Biochemistry

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

88 Scopus citations

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 Bi₂M₃Co₂O_y 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 Bi₂Sr₂CaCu₂O_y 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 language	English
Pages (from-to)	663-668
Number of pages	6
Journal	Solid State Communications
Volume	71
Issue number	8
DOIs	https://doi.org/10.1016/0038-1098(89)91813-9
State	Published - Aug 1989

Access to Document

10.1016/0038-1098(89)91813-9

Cite this

@article{15e11dd9bb804237a24e6b04daa59186,

title = "New non-superconducting layered Bi-oxide phases of formula Bi2M3Co2Oy containing Co instead of Cu",

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 Schneemeyer, {L. F.}",

year = "1989",

month = aug,

doi = "10.1016/0038-1098(89)91813-9",

language = "English",

volume = "71",

pages = "663--668",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Ltd",

number = "8",

}

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, L. F.

PY - 1989/8

Y1 - 1989/8

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.

UR - http://www.scopus.com/inward/record.url?scp=0024717690&partnerID=8YFLogxK

U2 - 10.1016/0038-1098(89)91813-9

DO - 10.1016/0038-1098(89)91813-9

M3 - Article

AN - SCOPUS:0024717690

SN - 0038-1098

VL - 71

SP - 663

EP - 668

JO - Solid State Communications

JF - Solid State Communications

IS - 8

ER -

New non-superconducting layered Bi-oxide phases of formula Bi₂M₃Co₂O_y containing Co instead of Cu

Abstract

Access to Document

Other files and links

Fingerprint

Cite this