J
John E. Greedan
Researcher at McMaster University
Publications - 395
Citations - 13063
John E. Greedan is an academic researcher from McMaster University. The author has contributed to research in topics: Neutron diffraction & Magnetic susceptibility. The author has an hindex of 55, co-authored 391 publications receiving 12171 citations. Previous affiliations of John E. Greedan include University of Alberta & University of California, Davis.
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Magnetic Pyrochlore Oxides
TL;DR: A review of the properties of pyrochlore oxides can be found in this paper, mainly from a materials perspective, but with an appropriate theoretical context, where the authors attempt to review the myriad of properties found in the oxides.
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Geometrically frustrated magnetic materials
TL;DR: The current state of efforts to understand the phenomenon of geometric magnetic frustration is described in the context of several key materials as mentioned in this paper, including transition metal oxides which crystallize with magnetic lattices which are geometrically or topologically prone to frustration.
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Cooperative Paramagnetism in the Geometrically Frustrated Pyrochlore Antiferromagnet Tb 2 Ti 2 O 7
J. S. Gardner,S. R. Dunsiger,Bruce D. Gaulin,Michel J. P. Gingras,John E. Greedan,Robert F. Kiefl,Mark D Lumsden,W. A. MacFarlane,N. P. Raju,J. E. Sonier,Ian P. Swainson,Zin Tun +11 more
TL;DR: In this article, a pyrochlore antiferromagnet in which the moments reside on a network of corner-sharing tetrahedra was studied. But unlike other geometrically frustrated systems, this system remains paramagnetic down to 0.07 K, rather than ordering into a conventional N\'eel or spin-glass-like state.
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An analysis of the rare earth contribution to the magnetic anisotropy in RCo5 and R2Co17 compounds
John E. Greedan,V. U. S. Rao +1 more
TL;DR: In this article, the rare earth contribution to the magnetocrystalline anisotropy in RCo5 and R2Co17 compounds with a single ion model using a Hamiltonian of the form: H= B 2 0 O 2 0 +gμ B J·H ex Hex is regarded as arising mainly from the cobalt sublattice.
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Shaped Ceramics with Tunable Magnetic Properties from Metal-Containing Polymers
Mark J. MacLachlan,Madlen Ginzburg,Neil Coombs,Thomas W. Coyle,N. P. Raju,John E. Greedan,Geoffrey A. Ozin,Ian Manners +7 more
TL;DR: The results indicate that cross-linked metal-containing polymers may be useful precursors to ceramic monoliths with tailorable magnetic properties.