Far-infrared study of field-induced phase transitions in Y0.5Lu0.5FeO3 and HoFeO3 orthoferrites

✍ Scribed by A.A. Mukhin; A.E. Egoyan; A. Wittlin; M.E.J. Boonman; A.M. Balbashov; I.Yu. Parsegov

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 275 KB
• Volume: 211
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(94)00957-w

✦ Synopsis

Spin excitations have been studied in Yo.5Luo.sFeO3 and HoFeO 3 in magnetic fields up to 20 T at frequencies 4-84cm -1. Anomalies of the AFMR modes have been found in Yo.sLuo.5FeO3 at the field-induced F24(Gx.~F~.x) --* F2(G~Fx) phase transition near 13.5 T. The observed AFMR and rare-earth mode behaviour in HoFeO3 at HI[b-axis and T = 1.2 K give evidence of the l"23(GzFx.y) ~/'13(GrFr) ~ _F34(GxFz,y ) phase transitions.