Scan-rate and vacuum pressure dependence of the nucleation and growth dynamics in a spin-crossover single crystal: the role of latent heat

2018 ◽  
Vol 20 (14) ◽  
pp. 9139-9145 ◽  
Author(s):  
Karl Ridier ◽  
Sylvain Rat ◽  
Lionel Salmon ◽  
William Nicolazzi ◽  
Gábor Molnár ◽  
...  
Keyword(s):  
Heat Exchange ◽  
Single Crystal ◽  
Pressure Dependence ◽  
Spin Crossover ◽  
Growth Dynamics ◽  
Nucleation And Growth ◽  
Switching Dynamics ◽  
Scan Rate ◽  
Hysteresis Properties

A heat exchange dependence was evidenced on both the hysteresis properties and the switching dynamics of a spin-crossover single crystal.

scholarly journals Influence of the ultra-slow nucleation and growth dynamics on the room-temperature hysteresis of spin-crossover single crystals

2021 ◽  
pp. 138442
Author(s):  
Volodymyr M. Hiiuk ◽  
Karl Ridier ◽  
Il'ya A. Gural'skiy ◽  
Alexander A. Golub ◽  
Igor O. Fritsky ◽  
...  
Keyword(s):  
Single Crystals ◽  
Room Temperature ◽  
Spin Crossover ◽  
Growth Dynamics ◽  
Nucleation And Growth ◽  
Temperature Hysteresis

Spatiotemporal Observation and Modeling of Remarkable Temperature Scan Rate Effects on the Thermal Hysteresis in a Spin-Crossover Single Crystal

2017 ◽  
Vol 121 (21) ◽  
pp. 11700-11708 ◽  
Author(s):  
Rachid Traiche ◽  
Mouhamadou Sy ◽  
Hassane Oubouchou ◽  
Guillaume Bouchez ◽  
François Varret ◽  
...  
Keyword(s):  
Single Crystal ◽  
Spin Crossover ◽  
Thermal Hysteresis ◽  
Rate Effects ◽  
Scan Rate

Field ion microscope investigations of atomic processes at surfaces

1989 ◽  
Vol 47 ◽  
pp. 228-229
Author(s):  
G. L. Kellogg ◽  
P. R. Schwoebel
Keyword(s):  
Single Crystal ◽  
Crystal Surface ◽  
Linear Chain ◽  
Atom Probe ◽  
Nucleation And Growth ◽  
Single Atom ◽  
Initial Structure ◽  
Atomic Processes ◽  
Single Crystal Surfaces ◽  
Field Ion Microscope

Although no longer unique in its ability to resolve individual single atoms on surfaces, the field ion microscope remains a powerful tool for the quantitative characterization of atomic processes on single-crystal surfaces. Investigations of single-atom surface diffusion, adatom-adatom interactions, surface reconstructions, cluster nucleation and growth, and a variety of surface chemical reactions have provided new insights to the atomic nature of surfaces. Moreover, the ability to determine the chemical identity of selected atoms seen in the field ion microscope image by atom-probe mass spectroscopy has increased or even changed our understanding of solid-state-reaction processes such as ordering, clustering, precipitation and segregation in alloys. This presentation focuses on the operational principles of the field-ion microscope and atom-probe mass spectrometer and some very recent applications of the field ion microscope to the nucleation and growth of metal clusters on metal surfaces.The structure assumed by clusters of atoms on a single-crystal surface yields fundamental information on the adatom-adatom interactions important in crystal growth. It was discovered in previous investigations with the field ion microscope that, contrary to intuition, the initial structure of clusters of Pt, Pd, Ir and Ni atoms on W(110) is a linear chain oriented in the <111> direction of the substrate.

Single crystal to single crystal transformation of spin-crossover coordination polymers from 3D frameworks to 2D layers

2021 ◽  
Vol 9 (15) ◽  
pp. 5082-5087
Author(s):  
Yu Gong ◽  
Wang-Kang Han ◽  
Hui-Shu Lu ◽  
Qing-Tao Hu ◽  
Huan Tu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Single Crystal ◽  
Coordination Polymers ◽  
Ligand Exchange ◽  
Spin Crossover ◽  
Metal Organic Frameworks ◽  
Crystal Transformation ◽  
Metal Organic

New Hofmann-type metal–organic frameworks display rare and complete ligand exchange induced single crystal to single crystal transformations from 3D frameworks to 2D layers, accompanied by magnetic properties transition from two-step SCO behavior to hysteretic SCO behavior.

On the theory of cyclic voltammetry for multiple nucleation and growth: Scan rate influence

2021 ◽  
Vol 883 ◽  
pp. 115056
Author(s):  
Alexander V. Kosov ◽  
Olga V. Grishenkova ◽  
Olga L. Semerikova ◽  
Vladimir A. Isaev ◽  
Yurii P. Zaikov
Keyword(s):  
Cyclic Voltammetry ◽  
Nucleation And Growth ◽  
Scan Rate

Role of Perfluorophenyl Group in the Side Chain of Small-Molecule n-Type Organic Semiconductors in Stress Stability of Single-Crystal Transistors

2021 ◽  
pp. 2095-2101
Author(s):  
Shohei Kumagai ◽  
Craig P. Yu ◽  
Shunsuke Nakano ◽  
Tatsuro Annaka ◽  
Masato Mitani ◽  
...  
Keyword(s):  
Single Crystal ◽  
Organic Semiconductors ◽  
Small Molecule ◽  
Side Chain

Spin-crossover iron(II) long-chain complex with slow spin equilibrium at low temperature

2021 ◽  
Author(s):  
Qi Zhao ◽  
Jin-Peng Xue ◽  
Zhi-Kun Liu ◽  
Zi-Shuo Yao ◽  
Jun Tao
Keyword(s):  
Low Temperature ◽  
Single Crystal ◽  
Spin Crossover ◽  
Chain Complex ◽  
Mononuclear Complex ◽  
X Ray ◽  
Alkyl Chains ◽  
Long Chain

A mononuclear complex with long alkyl chains, [FeII(H2Bpz2)2(C9bpy)] (1; H2Bpz2 = dihydrobis(1-pyrazolyl)borate, C9bpy = 4,4'-dinonyl-2,2'-bipyridine), was synthesized. Single-crystal X-ray crystallographic studies revealed that - and - forms of the complex...

scholarly journals Modeling of magneto-conductivity of bismuth selenide: a topological insulator

2021 ◽  
Vol 3 (4) ◽  
Author(s):  
Yogesh Kumar ◽  
Rabia Sultana ◽  
Prince Sharma ◽  
V. P. S. Awana
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Single Crystal ◽  
Single Crystals ◽  
X Ray Diffraction ◽  
Field Range ◽  
X Ray ◽  
Bulk Carriers ◽  
Different Temperatures

AbstractWe report the magneto-conductivity analysis of Bi2Se3 single crystal at different temperatures in a magnetic field range of ± 14 T. The single crystals are grown by the self-flux method and characterized through X-ray diffraction, Scanning Electron Microscopy, and Raman Spectroscopy. The single crystals show magnetoresistance (MR%) of around 380% at a magnetic field of 14 T and a temperature of 5 K. The Hikami–Larkin–Nagaoka (HLN) equation has been used to fit the magneto-conductivity (MC) data. However, the HLN fitted curve deviates at higher magnetic fields above 1 T, suggesting that the role of surface-driven conductivity suppresses with an increasing magnetic field. This article proposes a speculative model comprising of surface-driven HLN and added quantum diffusive and bulk carriers-driven classical terms. The model successfully explains the MC of the Bi2Se3 single crystal at various temperatures (5–200 K) and applied magnetic fields (up to 14 T).

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