scholarly journals Monitoring of the Mechanism of Mn Ions Incorporation into Quantum Dots by Optical and EPR Spectroscopy

Photonics ◽  
2019 ◽  
Vol 6 (4) ◽  
pp. 107
Author(s):  
Yuriy G. Galyametdinov ◽  
Dmitriy O. Sagdeev ◽  
Andrey A. Sukhanov ◽  
Violeta K. Voronkova ◽  
Radik R. Shamilov
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Magnetic Properties ◽  
Luminescent Properties ◽  
Manganese Concentration ◽  
Manganese Ions ◽  
Paramagnetic Resonance ◽  
Synthesis Of Nanoparticles ◽  
Zinc Sulfide Nanoparticles ◽  
Optical And Magnetic Properties ◽  
Electron Paramagnetic

Synthesis of nanoparticles doped with various ions can significantly expand their functionality. The conditions of synthesis exert significant influence on the distribution nature of doped ions and therefore the physicochemical properties of nanoparticles. In this paper, a correlation between the conditions of synthesis of manganese-containing cadmium sulfide or zinc sulfide nanoparticles and their optical and magnetic properties is analyzed. Electron paramagnetic resonance was used to study the distribution of manganese ions in nanoparticles and the intensity of interaction between them depending on the conditions of synthesis of nanoparticles, the concentration of manganese, and the type of initial semiconductor. The increase of manganese concentration is shown to result in the formation of smaller CdS-based nanoparticles. Luminescent properties of nanoparticles were studied. The 580 nm peak, which is typical for manganese ions, becomes more distinguished with the increase of their concentration and the time of synthesis.

scholarly journals Electron paramagnetic resonance of manganese-doped strontium titanate

Cerâmica ◽  
2020 ◽  
Vol 66 (378) ◽  
pp. 126-129
Author(s):  
R. S. de Biasi ◽  
M. L. N. Grillo
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Exchange Interaction ◽  
Strontium Titanate ◽  
Relative Intensity ◽  
Theoretical Equation ◽  
Manganese Concentration ◽  
Manganese Ions ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic ◽  
Mn Concentrations

Abstract Electron paramagnetic resonance (EPR) spectra of manganese-doped strontium titanate were investigated for several Mn concentrations. The spectra of Mn2+ and Mn4+ ions were observed and attributed, respectively, to Mn ions occupying Sr2+ and Ti4+ sites. The relative intensity of the spectra suggested that the manganese ions occupy preferentially Ti4+ sites. The results showed that the EPR peak-to-peak linewidth of the Mn4+ spectrum increases with manganese concentration according to the theoretical equation DHpp=0.45+210.f.(1-f)80 (mT). This suggested that the exchange interaction between tetravalent manganese ions in strontium titanate has an approximate range of 0.96 nm, comparable to that of Gd3+ in the same compound.

Optical and Magnetic Properties of Hg1-xMnxSe Alloys

2005 ◽  
Vol 494 ◽  
pp. 277-282 ◽  
Author(s):  
Dj. Jovanović ◽  
D. Milivojević ◽  
M.J. Romčević ◽  
B. Babić-Stojić ◽  
N.Ž Romčević
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Magnetic Properties ◽  
Far Infrared ◽  
Paramagnetic Resonance ◽  
X Ray ◽  
Infrared Reflectivity ◽  
Optical And Magnetic Properties ◽  
Electron Paramagnetic ◽  
Phonon Structure

In this paper we used X-ray, far-infrared reflectivity and electron paramagnetic resonance measurements to investigate the optical and magnetic properties of Hg1-xMnxSe (x£0.26) alloys. Also, we used different models to describe magnetic and phonon structure.

Ultra-broadband EPR spectroscopy in field and frequency domains

2018 ◽  
Vol 20 (22) ◽  
pp. 15528-15534 ◽  
Author(s):  
P. Neugebauer ◽  
D. Bloos ◽  
R. Marx ◽  
P. Lutz ◽  
M. Kern ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Magnetic Properties ◽  
Epr Spectroscopy ◽  
Paramagnetic Resonance ◽  
Powerful Technique ◽  
Electronic And Magnetic Properties ◽  
Wide Range ◽  
Frequency Domains ◽  
Electron Paramagnetic

Electron paramagnetic resonance (EPR) is a powerful technique to investigate the electronic and magnetic properties of a wide range of materials.

Epr of Mn2+ in Ni(CH3COO)2 4H2O and K2 Ni(SO4)2 6H2O

1980 ◽  
Vol 3 ◽  
Author(s):  
Sushil K. Misra ◽  
M. Jalochowski
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Magnetic Properties ◽  
Transition Temperature ◽  
Single Crystals ◽  
Liquid Helium ◽  
Liquid Nitrogen ◽  
Spin Hamiltonian ◽  
Paramagnetic Resonance ◽  
Hamiltonian Parameters ◽  
Electron Paramagnetic

ABSTRACTThe technique of electron paramagnetic resonance has been applied to study the magnetic properties of nickel acetate and nickel potassium tutton salt single crystals, using Mn2+ ion as probe. From the values of spin Hamiltonian parameters and linewidths at room, liquid nitrogen and liquid helium temperatures it is concluded that these crystals do not become magnetically ordered as the temperature is lowered to 3.2K, and thus the transition temperature, below which the crystal would order either ferromagnetically, or antiferromagnetically, for these crystals, should be below 3.2K.

scholarly journals Study on magnetic properties of strontium ferrite based on the technology of electron paramagnetic resonance

2015 ◽  
Vol 64 (10) ◽  
pp. 107502
Author(s):  
Li Shao-Bo ◽  
Yin Chun-Hao ◽  
Xu Zhen-Kun ◽  
Li Pei-Xin ◽  
Wu Cai-Ping ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Magnetic Properties ◽  
Strontium Ferrite ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic

Electron paramagnetic resonance and magnetic properties of composite C60:Er

2000 ◽  
Vol 210 (1-3) ◽  
pp. 215-224 ◽  
Author(s):  
B.D Shanina ◽  
A.A Konchits ◽  
S.P Kolesnik ◽  
M.Ya Katsaj
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Magnetic Properties ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic
Sign in / Sign up

Export Citation Format

Share Document