Low temperature spin reorientation in dysprosium iron garnet

Far-infrared spectra of the magnetic exchange resonances and optical phonons and their connection to magnetic and dielectric properties of Dy3Fe5OKang1, Standard2, Rogers3 et al. 2012Phys. Rev. B17150View full textAdd to dashboardCite

“…5 This transition was also studied by specific heat and high field magnetization measurements and was associated with the iron spin reorientation from the easy 111 axis to a low-symmetry angular phase. 25,26 A slightly lower transition temperature of 14.5 K was reported in Ref. 25.…”

Symmetry analysis of the magnetic structures in TbIG and Tb:YIG at low temperature

“…When a spin reorientation phase transition temperature region exists, the space group must be a subgroup of the two groups at the ends [24] with the requirement that the two ends of the spin reorientation phase transitions are characterized by second order nature in the T-range (40-140 K) [18]. Despite the previous theoretical predictions [20] that the nature of the upper transition at the end of the spin reorientation phase transition <uuw> <111> might be first order like the transition observed at T SR = 14.5 K in DyIG [25,26], good agreement is found with another second order transition at T 2 = 135 K on Tb 0.26 Y 2.74 IG single crystal [27]. The monoclinic space group (C2/c) (Г 1g = A g ) [23] (table 2) …”

Analysis on three-sublattice model of magnetic properties in rare-earth iron garnets under high magnetic fields

“…Moreover, several sets of the molecular-field coefficients have been determined, and, the temperature-dependence of the molecular-field coefficients has been pointed out [17]. However, it is found that the recent experimental phenomena on magnetic properties in DyIG, especially under high magnetic fields and low temperatures, have not been theoretically explained [18,19]. So, now, the above threesublattice model is applied to interpret the magnetic properties of DyIG in high magnetic fields.…”