ESR studies of the quasi-2D antiferromagnet Cu(Pz)2(ClO4)2


ESR studies of the quasi-2D antiferromagnet Cu(Pz)2(ClO4)2

Ozerov, M.; Wosnitza, J.; Čižmár, E.; Xiao, F.; Turnbull, M. M.; Landee, C. P.; Zvyagin, S. A.

We report systematic high-field electron spin resonance (ESR) studies of the quasi-two-dimensional spin- ½ Heisenberg antiferromagnet Cu(pz)2(ClO4)2 (pz denotes pyrazine or C4H4N2). The linewidth and resonance-field temperature dependences of the ESR absorptions in this compound were investigated in the frequency range from 85 to 416 GHz in magnetic fields up to 16 T. A pronounced ESR linewidth anomaly was revealed in the vicinity of TN. This anomaly reflects enhanced critical fluctuations in this compound at the 3D ordering. The experiment revealed a significant change in the linewidth behavior for magnetic fields above 7 T, whose origin will be discussed.

  • Poster
    Frühjahrstagung der DPG, 25.-30.03.2012, Berlin, Deutschland

Permalink: https://www.hzdr.de/publications/Publ-17016
Publ.-Id: 17016