Bs. Dumesh et al., Nuclear magnetic resonance of Mn-55 in the antiferromagnet CsMnBr3 in a variable longitudinal magnetic field, J EXP TH PH, 88(6), 1999, pp. 1221-1228
The spectrum and intensities of NMR lines are investigated experimentally a
nd theoretically for excitation by an alternating magnetic field h(parallel
to) parallel to a static field H in the quasi-one-dimensional, six-sublatt
ice antiferromagnet CsMnBr3. According to theory, two new NMR lines, which
are not excited by a transverse magnetic field h(perpendicular to), are obs
erved near the phase transition from triangular to collinear structure (H=H
-c) [JETP 86, 197 (1998)]. (C) 1999 American Institute of Physics. [S1063-7
761(99)02506-8].