dc.contributor.author | COEY, JOHN MICHAEL DAVID | |
dc.date.accessioned | 2009-08-14T10:40:03Z | |
dc.date.available | 2009-08-14T10:40:03Z | |
dc.date.issued | 2002 | |
dc.date.submitted | 2002 | en |
dc.identifier.citation | D. Kim, LB Zink, F. Hellman, JMD Coey 'Critical behaviour of LaO.75Sr0.25MnO3' in Physical Review B, 65, (21), 2002, pp 2144241-2144247 | en |
dc.identifier.other | Y | |
dc.description | PUBLISHED | en |
dc.description.abstract | Magnetization, susceptibility, and specific heat measurements were made on a single crystal of La0.75Sr0.25MnO3. The ferromagnetic-to-paramagnetic phase transition was found at 346 K and four critical exponents were measured as: ??=0.05??0.07, ?_=0.40??0.02, ?_=1.27??0.06, and ??=4.12??0.33. The values of critical exponents are all between mean-field values and three-dimensional-(3D)-Ising-model values. The scaling behavior is well obeyed for all measurements, and the associated exponent relations are well satisfied, validating the critical analysis. Although the cubic crystal structure of this material makes the 3D Heisenberg the expected model, uniaxial magnetic anisotropy arising from the shape of the sample causes the 3D Ising model to be important within the experimental temperature range. | en |
dc.description.sponsorship | We would like to thank M. Salamon and R. Fisch for their
insights and discussions on the critical-exponent theory, M.
Viret and E. N. Abarra for their help with the experiments,
and the NSF for support. We thank Alex Revcolevschii for
kindly providing the crystals used in the experiment. | en |
dc.format.extent | 2144241-2144247 | en |
dc.format.extent | 181276 bytes | |
dc.format.mimetype | application/pdf | |
dc.language.iso | en | en |
dc.publisher | American Physical Society | en |
dc.relation.ispartofseries | Physical Review B | en |
dc.relation.ispartofseries | 65 | en |
dc.relation.ispartofseries | 21 | en |
dc.rights | Y | en |
dc.subject | Physics | en |
dc.title | Critical behavior of La0.75Sr0.25MnO3 | en |
dc.type.supercollection | scholarly_publications | en |
dc.type.supercollection | refereed_publications | en |
dc.identifier.peoplefinderurl | http://people.tcd.ie/jcoey | |
dc.identifier.uri | http://hdl.handle.net/2262/31807 | |