Phase separation, memory effects, and magnetization steps in single crystalline La1.1 Sr1.9 Mn2 O7

Physical Review B Condensed Matter and Materials Physics 74:13 (2006)

Authors:

S Nair, AK Nigam, AV Narlikar, D Prabhakaran, A Boothroyd

Abstract:

The magnetic ground state of a single crystalline bilayered manganite La1.1 Sr1.9 Mn2 O7 is investigated using bulk magnetic measurements. Besides large relaxation times, memory effects reminiscent of that seen in spin glasses are also observed both in the field cooled and zero field cooled measurement protocols. These indicate that this system is not a canted antiferromagnet as was reported earlier, but on the contrary has an inhomogenous magnetic ground state arising as a consequence of phase separation. We also report the observation of sharp metamagnetic steps in this bilayered manganite, similar to that seen in phase separated three-dimensional perovskites. © 2006 The American Physical Society.

Dynamics from diffraction

Physica B Condensed Matter Elsevier 385 (2006) 285-287

Authors:

Andrew L Goodwin, Matthew G Tucker, Elizabeth R Cope, Martin T Dove, David A Keen

Evaluation of a Comprehensive Integrated Workplace-Based Program to Reduce Occupational Musculoskeletal Injury and Its Associated Morbidity in a Large Hospital

Journal of Occupational and Environmental Medicine Wolters Kluwer 48:11 (2006) 1159-1165

Authors:

Maziar Badii, Dave Keen, Shicheng Yu, Annalee Yassi

Experimental verification of the simulated performance of a compact supermirror focusing device

Physica B Condensed Matter Elsevier 385 (2006) 1240-1242

Authors:

David A Keen, Robert M Dalgliesh, Matthias J Gutmann, John RP Webster

SXD – the single‐crystal diffractometer at the ISIS spallation neutron source

Journal of Applied Crystallography International Union of Crystallography (IUCr) 39:5 (2006) 714-722

Authors:

David A Keen, Matthias J Gutmann, Chick C Wilson