Metamagnetic critical field

Fig. 71. Field derivatives of the magnetization curves of tetragonal TbNi2Si2 along the c axis at various temperatures the peak at 12 and 13 K indicates the metamagnetic critical field in the modulated phase (after Blanco et al. 1991b).

FIGURE 7 The magnetization curve of TbBso at 2 K. A metamagnetic transition occurs at a critical field of Hq = 30 kOe (Mori and Tanaka, 1999a). 

FeCp 2][DCNQ] orders at 4K as a metamagnet with a critical field (T/d of 3kOe at 1.8K. As is typical for a metamagnet, it exhibits a small amount of hysteresis with a coercive field, H , of 1.2 kOe as well as a remanence of... 

YbNiAl is a heavy-fermion antiferromagnet (Schank et al. 1995), and three successive antiferromagnetic phase transitions at Tn = 5.8, 2.9, and 1.3 K were observed for YbPtAl (Drescher et al. 1998). The Neel temperature of this aluminide shows a pressure dependence. Tn is almost pressure independent in an extended range up to about 11 GPa (5.6-5.2 K) and then increases rapidly, reaching Tn =7.2K at 26.2 GPa (Drescher et al. 1998). Both aluminides show metamagnetic transitions at critical fields of 2T (YbNiAl)... 

He critical field for the metamagnetic U Coulomb repulsive force... 

Fig. 5. Schematic picture of the change in the extremal cross-sectional areas depending on the up and down spin states. AF, and AFj mean the different antiferromagnetic states, and is the critical field showing the metamagnetic transition. and are the extremal areas for the up and down spin electrons, respectively, obtained from the dHvA measurements in the AFj region (Harima 1988).

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