MAGNETIC-PROPERTIES OF THE LOW-DIMENSIONAL SPIN SYSTEM (VO)(2)P2O7 - ESR AND SUSCEPTIBILITY

Authors
PROKOFIEV AV BULLESFELD F ASSMUS W SCHWENK H WICHERT D LOW U LUTHI B
Citation
Av. Prokofiev et al., MAGNETIC-PROPERTIES OF THE LOW-DIMENSIONAL SPIN SYSTEM (VO)(2)P2O7 - ESR AND SUSCEPTIBILITY, The European Physical Journal. B: Condensed Matter Physics, 5(3), 1998, pp. 313-316
Citations number
14
Categorie Soggetti
Physics, Condensed Matter
Journal title
The European Physical Journal. B: Condensed Matter Physics → ACNP
ISSN journal
14346028
Volume
5
Issue
3
Year of publication
1998
Pages
313 - 316
Database
ISI
SICI code
1434-6028(1998)5:3<313:MOTLSS>2.0.ZU;2-N
Abstract
Experimental results on magnetic resonance (ESR) and magnetic suscepti bility are given for single crystalline (VO)(2)P2O7. The crystal growt h procedure is briefly discussed. The susceptibility is interpreted nu merically using a model with alternating spin chains. We determine J = 51 K and delta = 0.2. Furthermore we find a spin gap of approximate t o 6 meV from our ESR measurements. Using elastic constants no indicati on of a phase transition forcing the dimerization is seen below 300 K.