Muons and magnets

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Competition between magnetism and superconductivity in TmNi2B2C observed by muon-spin rotation.

Phys Rev B Condens Matter 52:6 (1995) R3864-R3867

Authors:

DW Cooke, JL Smith, SJ Blundell, KH Chow, PA Pattenden, FL Pratt, SF Cox, SR Brown, A Morrobel-Sosa, RL Lichti, LC Gupta, R Nagarajan, Z Hossain, C Mazumdar, C Godart
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Fermi surface studies of low-dimensional organic conductors based on BEDT-TTF

Physica B Condensed Matter Elsevier 211:1-4 (1995) 275-281

Authors:

John Singleton, Jason Caulfield, Stephen Hill, Stephen Blundell, Wieslaw Lubczynski, Andrew House, William Hayes, Jos Perenboom, Mohammedally Kurmoo, Peter Day
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Magneto-optical studies of the heavy-fermion compound CeNiSn

PHYSICA B 211:1-4 (1995) 220-222

Authors:

SO HILL, H MATSUI, W HAYES, J SINGLETON, SJ BLUNDELL, E BUCHER, H HOHL

Abstract:

Millimetre wave magneto-optical measurements have been performed for the first time on the valence fluctuating rare earth compound CeNiSn and a rich spectrum of sharp features is observed.
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High-field magnetoresistance oscillations in alpha -.

Phys Rev B Condens Matter 51:13 (1995) 8325-8336

Authors:

J Caulfield, SJ Blundell, du Croo de Jongh MS, PT Hendriks, J Singleton, M Doporto, FL Pratt, A House, JA Perenboom, W Hayes, M Kurmoo, P Day
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Magnetic ordering in some organic molecular magnets

SYNTHETIC MET 71:1-3 (1995) 1827-1828

Authors:

T SUGANO, FL PRATT, M KURMOO, N TAKEDA, M ISHIKAWA, SJ BLUNDELL, PA PATTENDEN, RM VALLADARES, W HAYES, P DAY

Abstract:

In order to study correlation between magnetic ordering and crystal structures of organic molecular magnets, zero-field muon spin rotation (mu SR), electron spin resonance (ESR) and a.c. susceptibility of the organic neutral radicals, 3-quinolyl nitronyl nitroxide (3-QNNN) and p-pyridyl nitronyl nitroxide (p-PYNN), were investigated. The onset of magnetic ordering is indicated at 0.21 K for 3-QNNN and 0.11 K for p-PYNN in the mu SR measurements as well as the a.c. susceptibility results. The magnetic structures are discussed in terms of canted ferromagnetic spin structures on the basis of molecular arrangements in the crystals. Preferred spin directions with respect to the molecular orientations of the radicals in the crystals are discussed.
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