C
Colin Greaves
Researcher at University of Birmingham
Publications - 223
Citations - 4391
Colin Greaves is an academic researcher from University of Birmingham. The author has contributed to research in topics: Neutron diffraction & Crystal structure. The author has an hindex of 31, co-authored 223 publications receiving 4065 citations. Previous affiliations of Colin Greaves include Sandia National Laboratories & Mansoura University.
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Synthesis and superconducting properties of the strontium copper oxy-fluoride Sr2CuO2F2+δ
TL;DR: In this paper, the structural changes previously initiated by the thermodynamic effects of high pressure are induced chemically under ambient conditions, resulting in a superconducting oxy-fluoride in which fluorine plays a dominant structural role, rather than merely being an electronic dopant.
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Cation distribution and magnetic structure of the ferrimagnetic spinel NiCo2O4
José F. Marco,J. Ramón Gancedo,Mercedes Gracia,Juan Luis Gautier,E. Rios,Helen M. Palmer,Colin Greaves,Frank J. Berry +7 more
TL;DR: In this paper, the properties of the compound NiCo2O4 with spinel-related structure have been examined by means of magnetic measurements, neutron diffraction, X-ray absorption near edge structure (XANES) and extended Xray absorption fine structure (EXAFS), and the results suggest a delocalised electron distribution on the octahedral sites with average oxidation states of +3.5 and +2.5 for nickel and cobalt, respectively, and lead to a cation distribution for NiCo 2O4 of {Ni3+0.
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A powder neutron diffraction investigation of vacancy ordering and covalence in γ-Fe2O3
TL;DR: In this article, profile refinement of powder neutron diffraction data has been used to examine the structure of γ-Fe 2 O 3 and to evaluate covalence effects for octahedral and tetrahedral Fe 3+ ions within the structure.
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Synthesis and structural characterisation of YSr2Cu3−xMxO7±y (M = Fe, Ti, Al, Co, Ga, Pb; 0.5 < x < 1), and the non-existence of the parent phase YSr2Cu3O7
Peter R. Slater,Colin Greaves +1 more
TL;DR: The possibility of synthesizing phases of general composition YSr 2 Cu 3− x M x O 7± y has been examined for a wide variety of metals M.
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The structure of β-Bi2O3 from powder neutron diffraction data
S. K. Blower,Colin Greaves +1 more