Magnetic properties of donor-acceptor complexes of oligoanilinic substances

1969 ◽  
Vol 34 (2) ◽  
pp. 662-669
Author(s):  
V. Hádek ◽  
K. Ulbert
Keyword(s):  
Magnetic Properties ◽  
Donor Acceptor

Mixed Donor-Acceptor-Derived N ,N′ -Diarylpyrazine-2,5-dicarboxamido-Bridged Diruthenium Systems: Structures, Magnetic Properties, and Electronic Forms in Multiredox States

2017 ◽  
Vol 2017 (46) ◽  
pp. 5497-5506 ◽  
Author(s):  
Farheen Fatima Khan ◽  
Abhishek Mandal ◽  
Johannes Klein ◽  
José Luis Priego ◽  
Reyes Jiménez-Aparicio ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Donor Acceptor

scholarly journals Study of electrokinetic and magnetic properties of ZrNi1-xRhxSn semiconductive solid solution

2018 ◽  
Vol 19 (1) ◽  
pp. 21-28
Author(s):  
L.P. Romaka ◽  
Yu.V. Stadnyk ◽  
V.A. Romaka ◽  
A.M. Horyn ◽  
V.Ya. Krayovskyy
Keyword(s):  
Solid Solution ◽  
Magnetic Properties ◽  
Energy State ◽  
Charge Carriers ◽  
Structural Defects ◽  
Magnetic Characteristics ◽  
Main Charge ◽  
Deep Donor ◽  
Thermopower Coefficient ◽  
Donor Acceptor

The features of electrokinetic, energy state and magnetic characteristics of ZrNi1-xRhxSn semiconductive solid solution were investigated in the ranges: T = 80-400 K, x = 0-0.10. It was shown that substitution of Ni atoms (3d84s2) by Rh atoms (4d85s1) in the structure of ZrNiSn compound generated the structural defects with acceptor nature, and holes became the main charge carriers in the ZrNi1-xRhxSn at low temperature. Based on analysis of the motion rate of the Fermi level ΔεF/Δх in ZrNi1-xRhxSn to the valence band and change of sign of thermopower coefficient from positive to negative it was suggested that the structural defects of acceptor and donor natures were generated simultaneously (donor-acceptor pairs), and deep donor band ɛD2 was formed.

Electrical and magnetic properties of donor-acceptor semiconductors

1968 ◽  
Vol 8 (3) ◽  
pp. 393-398 ◽  
Author(s):  
P. A. Stunzhas ◽  
V. A. Benderskii ◽  
L. A. Blyumenfel'd
Keyword(s):  
Magnetic Properties ◽  
Electrical And Magnetic Properties ◽  
Donor Acceptor

Electron Paramagnetic Resonance Studies of Donor-Acceptor Salts in Polymer Media

1989 ◽  
Vol 173 ◽  
Author(s):  
Yang-Cheng Fann ◽  
Susan Ann Jansen
Keyword(s):  
Electrical Conductivity ◽  
Electron Paramagnetic Resonance ◽  
Magnetic Properties ◽  
Charge Transfer ◽  
Molecular Electronics ◽  
Charge Transfer Complexes ◽  
Paramagnetic Resonance ◽  
Donor Acceptor ◽  
Electron Paramagnetic ◽  
Polymeric Medium

ABSTRACTCharge transfer complexes, their inherent electrical conductivity, magnetic properties and donor-acceptor redox relationships have been a focus of much research in the last several years. One direction has been in the design of memory devices and applications in molecular electronics.1,2 Our work has focused on analysis of such processes in a polymeric medium. Polycarbonate films of 7,7’,8,8’-Tetracyanoquinodimethane (TCNQ) and o-tolidine (o-T) complexes were studied by EPR spectroscopy from 100-300K. EPR spectra and magnetic susceptibility of the dispersed charge-transfer complexes are presented and compared with the pristine materials. These studies were carried out as a function of donor/acceptor stoichiometry and concentration within the polymer matrix. Saturation studies show significant differences as the composition varies. In addition the g-tensor and linewidth are strongly dependent on temperature and composition.

The Nanoscience of Fullerenes

2006 ◽  
Vol 518 ◽  
pp. 1-8 ◽  
Author(s):  
E.F. Sheka
Keyword(s):  
Magnetic Properties ◽  
Fullerene Derivatives ◽  
Computational Synthesis ◽  
Donor Acceptor ◽  
Basic Concepts

A brief review of fascinating properties of fullerene is presented on the basis of the concept of effectively non-paired electrons. A versatile chemistry of fullerenes follows from the regioselectivity of their atoms and the uniqueness of donor-acceptor abilities. Computational synthesis of the fullerene derivatives is discussed. Applications of the basic concepts to medicinal applications of fullerenes as well as their magnetic properties and ability to form technomimetic species are considered.

AEM analysis of crystallization in Ti-based amorphous alloys

1983 ◽  
Vol 41 ◽  
pp. 270-271
Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Amorphous Materials ◽  
Isothermal Annealing ◽  
Amorphous Matrix ◽  
Nucleation And Growth ◽  
Current Interest ◽  
Amorphous Films ◽  
Electrical And Magnetic Properties

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.

Microstructure in soft magnetic E3 (S1, Al) (Sendust) alloys

1988 ◽  
Vol 46 ◽  
pp. 770-771
Author(s):  
June D. Kim
Keyword(s):  
Electron Microscopy ◽  
Magnetic Properties ◽  
Ternary Phase Diagram ◽  
Vertical Tube ◽  
Vacuum Induction Melting ◽  
Induction Melting ◽  
Soft Magnetic ◽  
Quenching Temperature ◽  
Thin Foils ◽  
Vertical Tube Furnace

Iron-base alloys containing 8-11 wt.% Si, 4-8 wt.% Al, known as “Sendust” alloys, show excellent soft magnetic properties. These magnetic properties are strongly dependent on heat treatment conditions, especially on the quenching temperature following annealing. But little has been known about the microstructure and the Fe-Si-Al ternary phase diagram has not been established. In the present investigation, transmission electron microscopy (TEM) has been used to study the microstructure in a Sendust alloy as a function of temperature.An Fe-9.34 wt.% Si-5.34 wt.% Al (approximately Fe3Si0.6Al0.4) alloy was prepared by vacuum induction melting, and homogenized at 1,200°C for 5 hrs. Specimens were heat-treated in a vertical tube furnace in air, and the temperature was controlled to an accuracy of ±2°C. Thin foils for TEM observation were prepared by jet polishing using a mixture of perchloric acid 15% and acetic acid 85% at 10V and ∼13°C. Electron microscopy was performed using a Philips EM 301 microscope.

Sign in / Sign up

Export Citation Format

Share Document