Interplay of Fe and Nd magnetism in NdFeAsO single crystals
| Title | Interplay of Fe and Nd magnetism in NdFeAsO single crystals |
| Publication Type | Journal Article |
| Year of Publication | 2010 |
| Authors | Tian W, Ratcliff W, Kim MG, Yan JQ, Kienzle PA, Huang Q, Jensen B, Dennis KW, McCallum RW, Lograsso TA, McQueeney RJ, Goldman AI, Lynn JW, Kreyssig A |
| Journal Title | Physical Review B |
| Volume | 82 |
| Pages | 060514 |
| Date Published | 8/25 |
| ISBN Number | 1098-0121 |
| Accession Number | ISI:000281225700002 |
| Keywords | layered quaternary compound, phase-diagram, superconductivity, TRANSITIONS |
| Abstract | The structural and magnetic phase transitions have been studied on NdFeAsO single crystals by neutron and x-ray diffraction complemented by resistivity and specific-heat measurements. Two low-temperature phase transitions have been observed in addition to the tetragonal-to-orthorhombic transition at T-S similar to 142 K and the onset of antiferromagnetic (AFM) Fe order below T-N similar to 137 K. The Fe moments order AFM in the well-known stripelike structure in the (ab) plane but change from AFM to ferromagnetic (FM) arrangement along the c direction below T* similar to 15 K accompanied by the onset of Nd AFM order below T-Nd similar to 6 K with this same AFM configuration. The iron magnetic order-order transition in NdFeAsO accentuates the Nd-Fe interaction and the delicate balance of c-axis exchange couplings that results in AFM in LaFeAsO and FM in CeFeAsO and PrFeAsO. |
| URL | <Go to ISI>://000281225700002 |
| DOI | 10.1103/Physrevb.82.060514 |
