Dielectric and magnetic properties of the multiferroic Tb(1−x)BixMnO3: Electric dipole glass and self-organization of charge carriers

JETP Letters ◽  
2005 ◽  
Vol 81 (10) ◽  
pp. 509-513 ◽  
Author(s):  
E. I. Golovenchits ◽  
V. A. Sanina
Keyword(s):  
Magnetic Properties ◽  
Electric Dipole ◽  
Charge Carriers ◽  
Self Organization ◽  
Dipole Glass

scholarly journals Influence of Li2CO3 addition on electrical and magnetic properties of Ni0.6Mg0.4Fe2O4

2020 ◽  
Vol 10 (03) ◽  
pp. 2050003
Author(s):  
M. R. Hassan ◽  
M. T. Islam ◽  
M. N. I. Khan
Keyword(s):  
Magnetic Properties ◽  
Single Phase ◽  
Low Frequency ◽  
Solid State Reaction Method ◽  
Charge Carriers ◽  
X Ray Diffraction ◽  
X Ray ◽  
Electrical And Magnetic Properties ◽  
Frequency Regime ◽  
Xrd Patterns

In this research, influence of adding Li2CO3 (at 0%, 2%, 4%, 6%) on electrical and magnetic properties of [Formula: see text][Formula: see text]Fe2O4 (with 60% Ni and 40% Mg) ferrite has been studied. The samples are prepared by solid state reaction method and sintered at 1300∘C for 6[Formula: see text]h. X-ray diffraction (XRD) patterns show the samples belong to single-phase cubic structure without any impurity phase. The magnetic properties (saturation magnetization and coercivity) of the samples have been investigated by VSM and found that the higher concentration of Li2CO3 reduces the hysteresis loss. DC resistivity increases with Li2CO3 contents whereas it decreases initially and then becomes constant at lower value with temperature which indicates that the studied samples are semiconductor. The dielectric dispersion occurs at a low-frequency regime and the loss peaks are formed in a higher frequency regime, which are due to the presence of resonance between applied frequency and hopping frequency of charge carriers. Notably, the loss peaks are shifted to the lower frequency with Li2CO3 additions.

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.

Effect of charge carriers on the magnetic properties of the CdCr2Se4 ferromagnetic semiconductor

2007 ◽  
Vol 49 (5) ◽  
pp. 912-917
Author(s):  
G. I. Vinogradova ◽  
L. V. Anzina ◽  
V. G. Veselago ◽  
M. V. Glushkov ◽  
T. N. Menshchikova ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Ferromagnetic Semiconductor ◽  
Charge Carriers

Dipole glass and ferroelectricity in random-site electric dipole systems

1990 ◽  
Vol 62 (4) ◽  
pp. 993-1026 ◽  
Author(s):  
B. E. Vugmeister ◽  
M. D. Glinchuk
Keyword(s):  
Electric Dipole ◽  
Random Site ◽  
Dipole Glass

scholarly journals Self-organization in dipolar cube fluids constrained by competing anisotropies

Soft Matter ◽  
2018 ◽  
Vol 14 (7) ◽  
pp. 1080-1087 ◽  
Author(s):  
Laura Rossi ◽  
Joe G. Donaldson ◽  
Janne-Mieke Meijer ◽  
Andrei V. Petukhov ◽  
Dustin Kleckner ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Dipole Moment ◽  
Self Assembly ◽  
Self Organization ◽  
Anisotropic Interactions ◽  
Assembly Behavior

We disclose the unique magnetic properties of cubic hematite particles and show that their self-assembly behavior is driven by competing anisotropic interactions caused by their shape and fixed dipole moment.

DYNAMICS IN PERTURBED VERY DILUTE AQUEOUS SOLUTIONS: THEORY AND EXPERIMENTAL EVIDENCE

2013 ◽  
Vol 27 (05) ◽  
pp. 1350005 ◽  
Author(s):  
TAMAR A. YINNON ◽  
VITTORIO ELIA
Keyword(s):  
Aqueous Solutions ◽  
Electric Dipole ◽  
Dipole Moments ◽  
Self Organization ◽  
Water Molecules ◽  
Quantum Field ◽  
Electric Dipole Moments ◽  
Periodic Oscillations ◽  
Theoretical Predictions ◽  
Dilute Aqueous Solutions

Perturbed very dilute aqueous solutions are investigated by analyzing their electric conductivity (χ). Foci include titrations and quasi-periodic oscillations of χ spanning several months. The χ data reflect persistent dissipative supramolecular self-organization. This paper's successful consistent explanations of the χ measurements corroborate earlier quantum field theoretical predictions. For example: (1) Permanent polarization results from quantum electro-dynamical interactions mediated auto-ordering of water molecules and molecular aggregates which have electric dipole moments. (2) The aggregates are created by exciting very dilute aqueous solutions, generating long lasting (cold) vortices in crystalline-like-structured super-fluidic domains. These domains are only present when the concentration (C) is lower than a solute dependent transitions concentration (C trans ). Typically, C trans is of the order of 10-4 M or below.

Carrier and vacancy mediated ferrimagnetism in Cu doped rutile TiO2

2021 ◽  
Author(s):  
Qiaolu Lin ◽  
Nannan Xu ◽  
Gongping Li ◽  
Zhengfang Qian ◽  
Huan Liu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Charge Carriers ◽  
Rutile Tio2 ◽  
Impurity Atoms ◽  
O Vacancy

The magnetic properties of Cu doped rutile TiO2 modulated by valency, concentration and distribution of substituted impurity atoms, and subjected to O vacancy and charge carriers.

Glass Transition in Quantum Dipole Glass Model

2012 ◽  
Vol 590 ◽  
pp. 138-142
Author(s):  
G. Busiello
Keyword(s):  
Phase Transition ◽  
Electric Dipole ◽  
Degrees Of Freedom ◽  
Dipole Moments ◽  
Temperature Phase ◽  
Glass Model ◽  
Temperature Phase Transition ◽  
Dipole Glass ◽  
Dielectric Glass ◽  
Low Temperature Phase

We give a description of the phase transition in an ensemble of the electric dipole with internal degrees of freedom in dielectric glass model.The model predicts a freezing of the random projections of the electric dipole moments. The low temperature phase transition from disordered paraelectric phase to the electric dipole orientational like glass phase is considered

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