Spherical core–shell magnetic particles constructed by main-chain palladium N-heterocyclic carbenes

Nanoscale ◽  
2015 ◽  
Vol 7 (8) ◽  
pp. 3532-3538 ◽  
Author(s):  
Huaixia Zhao ◽  
Liuyi Li ◽  
Jinyun Wang ◽  
Ruihu Wang
Keyword(s):  
Magnetic Particles ◽  
Main Chain ◽  
Heterocyclic Carbenes ◽  
Core Shell ◽  
Spherical Core

The spherical core–shell magnetic particles were presented by the encapsulation of Fe3O4nanoparticles inside the main-chain palladium N-heterocyclic carbene matrices.

Dynamic calculations of the core/shell structured Ising-type endohedral fullerenes: The effect of core and core/shell interaction

2017 ◽  
Vol 31 (33) ◽  
pp. 1750307 ◽  
Author(s):  
Ersin Kantar
Keyword(s):  
Magnetic Properties ◽  
Magnetic Particles ◽  
Stochastic Dynamics ◽  
Mean Field Theory ◽  
Mean Field ◽  
Core Shell ◽  
Core Particle ◽  
Factors Affecting ◽  
The Core ◽  
First Order Phase

In this study, we examine by comparing the dynamic magnetic and hysteretic properties of Ising-type endohedral fullerene (EF) with various dopant magnetic particles confined within a spherical cage. The model of EF X@C[Formula: see text] with X = spin-1/2, spin-1 and spin-3/2 is proposed to study the effect of the nature of core particle on the magnetic properties. The results were obtained by mean-field theory as well as Glauber-type stochastic dynamics, and focused on the response of thermal and hysteretic behaviors of systems. The system exhibits second- and first-order phase transitions. In three different core cases, the system also exhibits type-II superconductivity behavior with a dynamic hysteresis curves of the core. All results display magnetic properties of the EF which strongly depend on the nature of core particle. Moreover, core particle and core/shell (C–S) interaction are proposed as the basic factors affecting the magnetic properties of EF system.

Effects of ternary mixed crystals on interface/surface optical phonon in spherical core-shell quantum dots

2019 ◽  
Vol 33 (06) ◽  
pp. 1950068
Author(s):  
Y. Liu ◽  
L. P. Liu ◽  
Y. Xing ◽  
X. X. Liang
Keyword(s):  
Mixed Crystals ◽  
Core Shell ◽  
Phonon Modes ◽  
Electron Phonon Interaction ◽  
Interface Surface ◽  
Photoelectric Properties ◽  
Surface Optical ◽  
Spherical Core ◽  
The One ◽  
Dielectric Continuum

Within the framework of the dielectric continuum approach and modified random-element-isodisplacement model, the optical vibration mode in a spherical core-shell quantum dot (CSQD) consisting of ternary mixed crystals (TMCs) are investigated. The dispersion relation and electron–phonon interaction Hamiltonian are derived. As a typical case, the numerical results for [Formula: see text] and [Formula: see text] CSQDs are obtained and discussed. Taking the one- and two-mode behaviors of TMCs into account, the effects of TMCs on interface/surface optical (IO/SO) phonon show that there are 3 and 5 branches of IO/SO phonon modes in [Formula: see text] and [Formula: see text] CSQDs for a given component of TMC, respectively. It is also found that the IO/SO phonon frequencies and electron–phonon interactions are strongly dependent on the component of TMCs and the size of CSQDs. We hope this work would be useful for the study of the phonon-related photoelectric properties in CSQDs consisting of TMCs.

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