Field-temperature phase diagram

Fig- 2,9. Experimentally determined pressure-field-temperature phase diagrams for (a) (TMTSF)2PF6 and (b) (TMTSF)2C104. From [89]... 

Fig. 138. Left Hexagonal structure of UPtj. A prominent interstitial site is indicated. Right Magnetic field-temperature phase diagram of single-crystalline UPtj with the field applied in the basal plane. The three superconducting phases (A, B, C) are indicated. The diagram was derived from sound velocity data. Adapted...

Fig. 13.23 Electric field-temperature phase diagram of MHPOBC (Adapted from [33])...

Bobnar, V., Kutnjak, Z., Pirc, R., Levstik, A. (1999). Electric-field-temperature phase diagram of the relaxor ferroelectric lanthanum-modified lead zirconate titanate. 

Under the assumption, that a small deviation from the dimension d = 1 changes only the naive scaling dimensions of the fields, our results can be extended also to d = 1 + e dimensions (For details see appendix [20]). The zero temperature phase diagram is modified and illustrated in Fig. 3. For e < 0 the fixed point at (K = K, u = 0) is shifted to positive u-values (see left inset of Fig. 3), whereas for e > 0, K and u always flow to the... 

Fig. 13. Magnetic field vs. temperature phase diagram of single crystal PrFe4Pi2 with the magnetic fields applied along the (100) direction. The labels ODS and HFS refer to ordered state and heavy fermion state, respectively. The ordered state is probably due to quadrupolar ordering of the Pr 4f ground state. The solid and broken lines represent second-order and first-order phase boundaries, respectively (Aoki et al., 2002).

Fig. 2 Approximate pressure-temperature phase diagram showing the boundaries between the three phases of molecular C60. Dashed lines in the simple cubic field show coordinates corresponding to 30,50,65,80, and 92% H-oriented molecules...

Mn3+, estimated to be about 198 kJ/g.ion in the andalusite Ml site, is that it increases the stability field of viridines in the pressure-temperature phase diagram for the system Al2Si05-(Al1 Mnx)2Si05 where x < 0.2 (Abs-Wurmbach et al., 1981 Langer, 1988). The influence of CFSE on the stability field of Mn3+ andalusite is discussed in chapter 7 ( 7.7.4.1). 

FIGURE 4.17 Pressure-temperature phase diagram showing the amphibolite solidus and the residual minerals in equilibrium with TTG melts at different pressures and temperatures (after Wyllie et al., 1997 Rollinson, 2006). The shaded field is the preferred melting region of Moyen and Stevens (2005) based upon their review of the experimental evidence. 

With an increasing external field a series of the field-induced phase transitions BP I — cholesteric, BP II cholesteric, and then cholesteric —> nematic are observed. This is illustrated by Fig. 6.27 [91] where the voltage-temperature phase diagram is presented for a mixture (47-53 mol.%) of... 

Figures 3 and 4 clearly illustrate how such a small change in the chemical composition of the PLZT can strongly affect the material s properties PLZT (9.5/65/35) samples appear to possess a higher electric displacement compared to PLZT (9.0/65/35) at identical field values, but the hysteresis is slightly slimmer for the (9.0/65/35) composition samples. From Haertling s room temperature phase diagram of PLZT (Haertling 1987), it can be seen that...

With increasing external field a series of field-induced phase transitions is observed BP,—>cholesteric, BP,->cholesteric, and then cholesteric—>nematic [52]. This is illustrated in Fig. 8 [42] which shows a voltage-temperature phase diagram for a mixture (47-53 mol%) of chiral 15-CB with 4-n-hexyloxycyanobiphenyl (60-CB). BPj loses its stability, first transforming into the cholesteric phase, because the transition enthalpy AH, is extremely small ( 50 J mol" ) for the BPj-Ch transition. This enthalpy, normalized to a unit volume (0.2 J cm ) and compared with the difference in electrostatic energy density between the two phases Se (Se = ggp, - fch 0.2) ex-... 

FIGURE 9 The low-temperature phase diagrams of (a) " He and (b) He in zero magnetic field. 

Figure A3.3.2 A schematic phase diagram for a typical binary mixture showmg stable, unstable and metastable regions according to a van der Waals mean field description. The coexistence curve (outer curve) and the spinodal curve (iimer curve) meet at the (upper) critical pomt. A critical quench corresponds to a sudden decrease in temperature along a constant order parameter (concentration) path passing through the critical point. Other constant order parameter paths ending within tire coexistence curve are called off-critical quenches.

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