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Sample polycrystalline TaS2
Sample polycrystalline TaS2
1T-TaS2 crystals grown by transport reaction
1T-TaS2 crystals grown by transport reaction
(a): Schematic of the David star pattern in 1T-TaS2 where green atoms are S and purple are Ta. (b) and (c) are STM images (6.5 K) before and after app
(a): Schematic of the David star pattern in 1T-TaS2 where green atoms are S and purple are Ta. (b) and (c) are STM images (6.5 K) before and after application of 2.8 V pulses through the STM tip. Insets show ~10 times magnified images.
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Solid phase transitions which transform reversibly without passing through the liquid or gaseous phases are called enantiotropic. In contrast, if the
Solid phase transitions which transform reversibly without passing through the liquid or gaseous phases are called enantiotropic. In contrast, if the modifications are not convertible under these conditions, the system is monotropic. Experimental data are used to differentiate between enantiotropic and monotropic transitions and energy/temperature semi-quantitative diagrams can be drawn by applying several rules, principally the heat-of-transition rule, the heat-of-fusion rule and the density rule. These rules enable the deduction of the relative positions of the H and Gisobars in the E/T diagram. [1]
Image: Calcite jaune
Image: Calcite jaune
Image: Aragonite 2 Enguidanos
Image: Aragonite 2 Enguidanos