Title :
High frequency ESR studies of kagome antiferromagnets
Author :
Mitsudo, S. ; Goda, G. ; Fujita, T. ; Toda, Masayoshi ; Idehara, T. ; Kikuchi, H. ; Fujii, Yuka ; Chiba, M.
Author_Institution :
Res. Center for Dev. of Far-Infrared Region, Fukui Univ., Japan
fDate :
27 Sept.-1 Oct. 2004
Abstract :
Ba2Sn2Ga3ZnCr7O22 is pyrochlore slab antiferromagnets and exhibits a strong frustration. The pyrochlore slab lattice consists of two 2D-kagome layers which sandwiches a triangular layer in between. In order to investigate the magnetic behaviors, high frequency ESR measurements of the diluted Ba2Sn2Ga10-7pZnCr7pO22 have been performed in the millimeter wave region (120 GHz and 228 GHz) at the temperatures from 4.2 K to 200 K. The concentration dependences of Cr3+ magnetic ions were observed from p=0.01 p=1.
Keywords :
antiferromagnetic materials; barium compounds; frustration; gallium compounds; millimetre wave measurement; paramagnetic resonance; tin compounds; zinc compounds; 120 GHz; 228 GHz; 2D kagome layers; 4.2 to 200 K; Ba2Sn2Ga3ZnCr7O22; frustration; high frequency ESR measurement; kagome antiferromagnets; millimeter wave region; pyrochlore slab antiferromagnets; pyrochlore slab lattice; Antiferromagnetic materials; Chromium; Frequency measurement; Lattices; Millimeter wave measurements; Paramagnetic resonance; Performance evaluation; Slabs; Temperature dependence; Tin;
Conference_Titel :
Infrared and Millimeter Waves, 2004 and 12th International Conference on Terahertz Electronics, 2004. Conference Digest of the 2004 Joint 29th International Conference on
Print_ISBN :
0-7803-8490-3
DOI :
10.1109/ICIMW.2004.1421989
