The current state of ultrasonic research of dynamic critical phenomena in magnetically ordered crystals is reviewed. Based on relevant theoretical concepts, the conclusion is drawn that the experimental data on ferro-, ferri-, and antiferromagnetic materials in both the hydrodynamic and critical regions can be described in terms of the dynamic scaling concept and the theory of interacting modes. The influence of a magnetic field on the dynamics of critical fluctuations of magnetization and spin-energy density is discussed.

PACS: 43.35.Cg, 64.60.Ht, 75.50.y (all) DOI: 10.1070/PU1998v041n09ABEH000440 URL: https://ufn.ru/en/articles/1998/9/d/ 000076559800002 Citation: Kamilov I K, Aliev Kh K "Ultrasonic studies of the critical dynamics of magnetically ordered crystals" Phys. Usp. 41 865–884 (1998) BibTexBibNote ® (generic)BibNote ® (RIS) MedlineRefWorks PT Journal Article TI Ultrasonic studies of the critical dynamics of magnetically ordered crystals AU Kamilov I K FAU Kamilov IK AU Aliev Kh K FAU Aliev KK DP 10 Sep, 1998 TA Phys. Usp. VI 41 IP 9 PG 865-884 RX 10.1070/PU1998v041n09ABEH000440 URL https://ufn.ru/en/articles/1998/9/d/ SO Phys. Usp. 1998 Sep 10;41(9):865-884 Оригинал: Камилов И К, Алиев Х К «Исследование критической динамики магнитоупорядоченных кристаллов ультразвуковыми методами» УФН 168 953–974 (1998); DOI: 10.3367/UFNr.0168.199809c.0953