Abstract
A structural, magnetic and electronic study of the cobaltocuprate CoSr2Y2-xCexCu2O9 +/-delta (x = 0.5-0.8) has been performed. All materials crystallise in the orthorhombic Cmem symmetry space group in which chains of corner linked CoO4 tetrahedra run parallel to the 110 direction. An antiferromagnetic transition is observed for x = 0.5-0.8; 7 T-M increases with N. A change in the dimensionality of the magnetic order occurs at x = 0.8 as the interchain distance increases to a critical Value, There is charge transfer between the cuprate planes and cobaltate layer as Co3+ doping increases. so that Co is partially oxidised to Co with a concomitant reduction in the valence of Cu. Superconductivity is not observed in any of the samples and a crossover from Mott to Efros and Shklovskii variable range hopping behaviour is evidenced as v increases from 0,5 to 0.8, (c) 2005 Elsevier Inc. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 2274-2281 |
| Number of pages | 7 |
| Journal | Journal of Solid State Chemistry |
| Volume | 178 |
| DOIs | |
| Publication status | Published - Jun 2005 |
Keywords
- antiferromagnetism
- superconductivity
- RuSr2GdCu2O8
- triple perovskite
- spin glass
- COO2 SQUARE-PLANES
- SUPERCONDUCTING RUSR2GDCU2O8
- COBALT
- FERROMAGNETISM
- GD
- MAGNETORESISTANCE
- SR2CU2COO2S2
- DIFFRACTION
- CRYSTAL
- PHASES
Cite this
Doping studies of the magnetic cobaltocuprate CoSr2Y2-xCexCu2O9. / McLaughlin, Abbie; Morrice, D.; Sher, F.
In: Journal of Solid State Chemistry, Vol. 178, 06.2005, p. 2274-2281.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Doping studies of the magnetic cobaltocuprate CoSr2Y2-xCexCu2O9
AU - McLaughlin, Abbie
AU - Morrice, D.
AU - Sher, F.
PY - 2005/6
Y1 - 2005/6
N2 - A structural, magnetic and electronic study of the cobaltocuprate CoSr2Y2-xCexCu2O9 +/-delta (x = 0.5-0.8) has been performed. All materials crystallise in the orthorhombic Cmem symmetry space group in which chains of corner linked CoO4 tetrahedra run parallel to the 110 direction. An antiferromagnetic transition is observed for x = 0.5-0.8; 7 T-M increases with N. A change in the dimensionality of the magnetic order occurs at x = 0.8 as the interchain distance increases to a critical Value, There is charge transfer between the cuprate planes and cobaltate layer as Co3+ doping increases. so that Co is partially oxidised to Co with a concomitant reduction in the valence of Cu. Superconductivity is not observed in any of the samples and a crossover from Mott to Efros and Shklovskii variable range hopping behaviour is evidenced as v increases from 0,5 to 0.8, (c) 2005 Elsevier Inc. All rights reserved.
AB - A structural, magnetic and electronic study of the cobaltocuprate CoSr2Y2-xCexCu2O9 +/-delta (x = 0.5-0.8) has been performed. All materials crystallise in the orthorhombic Cmem symmetry space group in which chains of corner linked CoO4 tetrahedra run parallel to the 110 direction. An antiferromagnetic transition is observed for x = 0.5-0.8; 7 T-M increases with N. A change in the dimensionality of the magnetic order occurs at x = 0.8 as the interchain distance increases to a critical Value, There is charge transfer between the cuprate planes and cobaltate layer as Co3+ doping increases. so that Co is partially oxidised to Co with a concomitant reduction in the valence of Cu. Superconductivity is not observed in any of the samples and a crossover from Mott to Efros and Shklovskii variable range hopping behaviour is evidenced as v increases from 0,5 to 0.8, (c) 2005 Elsevier Inc. All rights reserved.
KW - antiferromagnetism
KW - superconductivity
KW - RuSr2GdCu2O8
KW - triple perovskite
KW - spin glass
KW - COO2 SQUARE-PLANES
KW - SUPERCONDUCTING RUSR2GDCU2O8
KW - COBALT
KW - FERROMAGNETISM
KW - GD
KW - MAGNETORESISTANCE
KW - SR2CU2COO2S2
KW - DIFFRACTION
KW - CRYSTAL
KW - PHASES
U2 - 10.1016/j.jssc.2005.05.002
DO - 10.1016/j.jssc.2005.05.002
M3 - Article
VL - 178
SP - 2274
EP - 2281
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
SN - 0022-4596
ER -