STM/STS STUDIES OF THE INITIAL STAGE OF GROWTH OF ULTRA-THIN Bi FILMS ON 7 × 7-Si(111) SURFACE

2007 ◽  
Vol 06 (05) ◽  
pp. 399-401 ◽  
Author(s):  
A. I. ORESHKIN ◽  
J. T. SADOWSKI ◽  
T. NAGAO ◽  
S. YAGINUMA ◽  
Y. FUJIKAWA ◽  
...  
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Room Temperature ◽  
Film Growth ◽  
Structural Phase ◽  
Temperature Growth ◽  
Initial Stage

The results of investigation of the room temperature growth of thin Bi films on Si (111)-7 × 7 are present. In the initial stage of Bi film growth the rotationally disordered, pseudo-cubic, Bi {012} islands with a uniform height of 13 Å are formed. With increasing bismuth on the surface, islands interconnect, maintaining however their uniform height, and structural phase transition of the {012} film into a hexagonal Bi (001) film takes place.

scholarly journals Near-room-temperature reversible giant barocaloric effects in [(CH3)4N]Mn[N3]3 hybrid perovskite

2020 ◽  
Vol 1 (9) ◽  
pp. 3167-3170 ◽  
Author(s):  
Jorge Salgado-Beceiro ◽  
Ariel Nonato ◽  
Rosivaldo Xavier Silva ◽  
Alberto García-Fernández ◽  
Manuel Sánchez-Andújar ◽  
...  
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Room Temperature ◽  
Structural Phase ◽  
Inorganic Perovskite ◽  
First Order ◽  
Hybrid Perovskite

We report giant reversible barocaloric effects in [(CH3)4N]Mn[N3]3 hybrid organic–inorganic perovskite, near its first-order cubic-monoclinic structural phase transition at T0 ∼ 305 K.

Phase Transitions and Water Dynamics of [Mn(H2O)6](ClO4 )2 Studied by Differential Scanning Calorimetry and Neutron Scattering Methods

2000 ◽  
Vol 55 (9-10) ◽  
pp. 759-764 ◽  
Author(s):  
E. Mikuli ◽  
A. Migdał-Mikuli ◽  
I. Natkaniec ◽  
J. Mayer
Keyword(s):  
Phase Transition ◽  
Low Temperature ◽  
Neutron Scattering ◽  
Structural Phase Transition ◽  
Room Temperature ◽  
Structural Phase ◽  
Water Dynamics ◽  
Water Molecules ◽  
Temperature Phase ◽  
Solid Phases

Abstract DSC measurements performed at 95 -290 K have shown that [Mn(H 2 O) 6 ](CIO 4) 2 possesses, besides a high-temperature phase, existing above 323 K, four low-temperature solid phases. The inelastic incoherent neutron scattering (IINS) spectra and neutron powder diffraction (NPD) pat-terns registered at 20 -290 K have supported the DSC results and provided evidence that the investigated substance possesses even more than five solid phases. The IINS spectra have shown that in the room-temperature phase, water molecules perform fast stochastic reorientation at the picosecond scale. The orientational disorder characteristic for the room-temperature phase can be easily overcooled and frozen. Even by relatively slow cooling at ca. 40 K/hour a metastable, orientational (protonic) glass phase is formed below ca. 160 K. Below ca. 100 K, a structural phase transition was observed by the NPD, however the IINS spectra indicate existence of the pure ordered low-temperature phase only after annealing the sample for a few hours at 100 K. On heating, a structural phase transition takes place at ca. 120 K, and at ca. 225 K water molecules begin fast reorientation.

Holmium induced enhanced functionality at room temperature and structural phase transition at high temperature in bismuth ferrite nanoparticles

2016 ◽  
Vol 4 (4) ◽  
pp. 780-792 ◽  
Author(s):  
Smita Chaturvedi ◽  
Rabindranath Bag ◽  
Vasant Sathe ◽  
Sulabha Kulkarni ◽  
Surjeet Singh
Keyword(s):  
Phase Transition ◽  
High Temperature ◽  
High Temperatures ◽  
Structural Phase Transition ◽  
Room Temperature ◽  
Bismuth Ferrite ◽  
Structural Phase ◽  
Ferrite Nanoparticles ◽  
High Coercivity ◽  
Remnant Magnetization

Ho-doped sample simultaneously exhibits high-coercivity and enhanced remnant magnetization with a polar R3c symmetry at room temperature. The onset of R3c to Pnma phase transition is observed at high temperatures in the Ho-doped samples.

Structural Phase Transition of NaNbO3below Room Temperature

1985 ◽  
Vol 24 (S2) ◽  
pp. 255 ◽  
Author(s):  
Masanori Hidaka ◽  
Hironari Fujii ◽  
Shigeki Maeda
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Room Temperature ◽  
Structural Phase

Structural Phase Transition of CsPbCl3 below Room Temperature

1983 ◽  
Vol 79 (1) ◽  
pp. 263-269 ◽  
Author(s):  
M. Hidaka ◽  
Y. Okamoto ◽  
Y. Zikumaru
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Room Temperature ◽  
Structural Phase

The impact of room temperature polymorphism in K doped NaTaO3 on structural phase transition behaviour

2016 ◽  
Vol 238 ◽  
pp. 109-112 ◽  
Author(s):  
Shamanthini William Arulnesan ◽  
Paula Kayser ◽  
Brendan J. Kennedy ◽  
Kevin S. Knight
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Room Temperature ◽  
Structural Phase ◽  
The Impact ◽  
Transition Behaviour

Above room-temperature dielectric switching and semiconducting properties of a layered organic–inorganic hybrid compound: (C6H12N)2Pb(NO3)4

2020 ◽  
Vol 49 (46) ◽  
pp. 16860-16865
Author(s):  
Jia-Ying Jiang ◽  
Qi Xu ◽  
Jia-Jun Ma ◽  
Zhi-Xin Gong ◽  
Chao Shi ◽  
...  
Keyword(s):  
Phase Transition ◽  
Dielectric Constant ◽  
Structural Phase Transition ◽  
Room Temperature ◽  
Structural Phase ◽  
Hybrid Compound ◽  
Inorganic Hybrid ◽  
Semiconducting Properties

(C6H12N)2Pb(NO3)4, a layered hybrid semiconductor with switchable dielectric constant, undergoes a structural phase transition around 352 K.

Temperature-induced reversible structural phase transition of 1,4-dimethyl-1,4-diazabicyclo[2.2.2]octane bis(perchlorate)

RSC Advances ◽  
2015 ◽  
Vol 5 (69) ◽  
pp. 55914-55919 ◽  
Author(s):  
Li-Zhuang Chen ◽  
Xing-Xing Cao ◽  
Deng-Deng Huang ◽  
Qi-Jian Pan
Keyword(s):  
Phase Transition ◽  
Low Temperature ◽  
Phase Change ◽  
Phase Change Material ◽  
Structural Phase Transition ◽  
Room Temperature ◽  
Paraelectric Phase ◽  
Structural Phase ◽  
Disorder Transition ◽  
Change Material

A novel molecular-based phase change material was synthesized. The phase transition from a room temperature to a low temperature paraelectric phase might be driven by the order–disorder transition of ClO4− anions and the ordering of twisting motions of the dabco ring.

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