| Full text | |
| Author(s): |
Adriano, C.
[1]
;
Freitas, R. S.
[2]
;
Paduan-Filho, A.
[2]
;
Pagliuso, P. G.
[1]
;
Oliveira, Jr., N. F.
[2]
;
Lahti, P. M.
[3]
Total Authors: 6
|
| Affiliation: | [1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, Campinas, SP - Brazil
[2] Univ Sao Paulo, Inst Fis, Rua Matao 1371, BR-05508090 Sao Paulo, SP - Brazil
[3] Univ Massachusetts, Dept Chem, Amherst, MA 01003 - USA
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | Polyhedron; v. 136, p. 2-4, NOV 4 2017. |
| Web of Science Citations: | 0 |
| Abstract | |
We present a combination of heat capacity and ac susceptibility measurements as a function of temperature and field, of a single crystal of the radical 2-(4,5,6,7-tetrafluorobenzimidazol-2-yl)-4,4,5,5-tetramethy1-4,5-dihydro -1H-imidazole-3-oxide-1-oxyl. Our results confirm a zero-field Neel temperature at T-N(0) = 0.73 K and allow the determination of the critical field parameters H-c(ll) = 170 Oe and H-c (perpendicular to) = 306 Oe. Assuming the previously determined 1-D intrachain ferromagnetic exchange interaction of J(intra)/k = +22 K between radicals, the interchain antiferromagnetic interaction is calculated as ZJ(inter)/k similar to -0.03 K. (c) 2017 Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 15/16191-5 - The research in new materials involving high magnetic fields and low temperatures |
| Grantee: | Gennady Gusev |
| Support Opportunities: | Research Projects - Thematic Grants |