Search for the muon-stopping sites in rare-earth orthoferites [i.e. orthoferrites] by means of dipolar calculation
dc.creator | Lin, Tsai-ku | |
dc.date.accessioned | 2016-11-14T23:12:18Z | |
dc.date.available | 2011-02-18T19:12:03Z | |
dc.date.available | 2016-11-14T23:12:18Z | |
dc.date.issued | 1986-08 | |
dc.degree.department | Physics | en_US |
dc.description.abstract | The uSR data for RFe03 (R=Er, Ho, Y, Dy, Eu and Sm) indicates that three separate localized muon sites may exist. In Ref.(12) one of these sites lying in the R-0 plane of the perovskite structure was identified, hereafter referred to as the Holzschuh-1 site. We have performed dipole sum calculations of the internal fields in the orthoferrites for the magnetic orderings present within the series. Using a weighting scheme requiring a match to the experimental values for the magnitude and directions of internal fields from observed uSR signals, and a muon-oxygen distance consistent with bond formation, we have verified the Holzschuh-1 site and have identified two additional muon-oxygen bonding sites. The three sites thus located provide a satisfactory explanation for all of the uSR signals reported in the orthoferrite series. The two newly identified sites, which we have called "Holzschuh-2 and Hofmann sites" are associated with the corner oxygen of the rare-earth oxygen plane in the pseudolattice picture (Fe=origin). At higher temperatures, increased muon motion results in migration of muons to the more stable Holzschuh-1 site, so that only one signal is seen. | |
dc.format.mimetype | application/pdf | |
dc.identifier.uri | http://hdl.handle.net/2346/9823 | en_US |
dc.language.iso | eng | |
dc.publisher | Texas Tech University | en_US |
dc.rights.availability | Unrestricted. | |
dc.subject | Orthoferrites | en_US |
dc.subject | Muons | en_US |
dc.subject | Muon spin rotation | en_US |
dc.title | Search for the muon-stopping sites in rare-earth orthoferites [i.e. orthoferrites] by means of dipolar calculation | |
dc.type | Thesis |