Synthesis and phase transition properties of VO 2 (M) hollow spheres with large thermal hysteresis width

2019 ◽  
Vol 14 (7) ◽  
pp. 819-822
Author(s):  
Yifu Zhang
Keyword(s):  
Phase Transition ◽  
Thermal Hysteresis ◽  
Hollow Spheres ◽  
Hysteresis Width

Controllable synthesis of VO2(D) and their conversion to VO2(M) nanostructures with thermochromic phase transition properties

2016 ◽  
Vol 3 (8) ◽  
pp. 1035-1042 ◽  
Author(s):  
Zhengdong Song ◽  
Liangmiao Zhang ◽  
Fang Xia ◽  
Nathan A. S. Webster ◽  
Jingchao Song ◽  
...  
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Phase Transition Temperature ◽  
Thermal Hysteresis ◽  
Controllable Synthesis ◽  
Smart Windows ◽  
Hysteresis Width ◽  
Calcination Method

VO2(M) nanostructures with lower thermochromic phase transition temperature and narrower thermal hysteresis width were synthesized by a hydrothermal-calcination method, making them suitable candidates for smart windows.

Spin-crossover in an iron(iii) complex showing a broad thermal hysteresis

2021 ◽  
Author(s):  
Cyril Rajnák ◽  
Romana Mičová ◽  
Ján Moncoľ ◽  
Ľubor Dlháň ◽  
Christoph Krüger ◽  
...  
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Spin Crossover ◽  
Thermal Hysteresis ◽  
Mononuclear Complex ◽  
Hysteresis Width ◽  
Thermally Induced

A pentadentate Schiff-base ligand 3,5Cl-L2− and NCSe− form a iron(iii) mononuclear complex [Fe(3,5Cl-L)(NCSe)], which shows a thermally induced spin crossover with a broad hysteresis width of 24 K between 123 K (warming) and 99 K (cooling).

scholarly journals Phase transition in (EDO-TTF)2PF6: domain growth in the thermal hysteresis and ultra-fast photoinduced effects

2005 ◽  
Vol 21 ◽  
pp. 149-154 ◽  
Author(s):  
L Guérin ◽  
D Glijer ◽  
N Moisan ◽  
M Lorenc ◽  
M Buron-Le Cointe ◽  
...  
Keyword(s):  
Phase Transition ◽  
Thermal Hysteresis ◽  
Domain Growth

RESISTIVE ANOMALIES AT NEAR 250 K IN Hg-Ca-Cu-O AND Fe-S SYSTEMS

1999 ◽  
Vol 13 (29n31) ◽  
pp. 3755-3757
Author(s):  
S. S. YOM ◽  
JONG-KU PARK ◽  
G. H. KIM ◽  
H. S. KIM ◽  
J. Y. LEE ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Magnetic Susceptibility ◽  
Mechanical Alloying ◽  
Thermoelectric Power ◽  
Thermal Hysteresis ◽  
Unknown Origin ◽  
Synthesis Condition ◽  
Nominal Composition ◽  
Rapid Drop

High pressure synthesized samples of nominal composition of Ca 2-x Hg x CuO y with x=0.10~0.20 under reductive synthesis condition showed stable and reproducible resistivity onset transition at 225~254 K accompanied by rapid drop of thermoelectric power without accompanying magnetic susceptibility transition. Fe 1-x S ( x =0) by mechanical alloying method showed resistivity anomaly and thermal hysteresis at 150~180 K. These resistive anomalies may be phase transition of unknown origin rather than an indication of superconductivity.

scholarly journals High-contrast and reversible polymer thermal regulator by structural phase transition

2019 ◽  
Vol 5 (12) ◽  
pp. eaax3777 ◽  
Author(s):  
Ramesh Shrestha ◽  
Yuxuan Luan ◽  
Sunmi Shin ◽  
Teng Zhang ◽  
Xiao Luo ◽  
...  
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Thermal Hysteresis ◽  
Structural Phase ◽  
Phonon Transport ◽  
High Contrast ◽  
Active Components ◽  
Gauche Conformation ◽  
Trans Conformation ◽  
Experimental Values

In comparison with the advancement of switchable, nonlinear, and active components in electronics, solid-state thermal components for actively controlling heat flow have been extremely rare. We demonstrate a high-contrast and reversible polymer thermal regulator based on the structural phase transition in crystalline polyethylene nanofibers. This structural phase transition represents a dramatic change in morphology from a highly ordered all-trans conformation to a combined trans and gauche conformation with rotational disorder, leading to an abrupt change in phonon transport along the molecular chains. For five nanofiber samples measured here, we observe an average thermal switching ratio of ~8× and maximum switching ratio of ~10×, which occurs in a narrow temperature range of 10 K across the structural phase transition. To the best of our knowledge, the ~10× switching ratio exceeds any reported experimental values for solid-solid and solid-liquid phase transitions of materials. There is no thermal hysteresis observed upon heating/cooling cycles.

Sign in / Sign up

Export Citation Format

Share Document