scholarly journals Influence of γ – radiation on the properties of silicon with clusters impurity atoms of manganese and nickel

2021 ◽  
Vol 289 ◽  
pp. 07020
Author(s):  
Zlixa Saparniyazova ◽  
Temur Ismaylov ◽  
Gulnaza Abdireymova ◽  
Gulnaz Turmanova ◽  
T Kh Hakimov

In works [1-4], it was shown that a number of new physical phenomena are observed in silicon with nanoclusters, such as high-temperature negative magnetoresistance (NMR), anomalously high impurity photoconductivity, giant residual photoconductivity, etc. All these phenomena are directly related to the presence of multiply charged, magnetic clusters of manganese atoms in the silicon lattice. It is shown that, on the basis of such materials, it is possible to create fundamentally new, highly sensitive magnetosensors, photodetectors of infrared radiation operating in the μm region and photomagnetic devices.

1999 ◽  
Vol 14 (3) ◽  
pp. 631-633 ◽  
Author(s):  
Liling Sun ◽  
Qi Wu ◽  
Yafei Zhang ◽  
Wenkui Wang

The tendency of graphite-diamond transformation assisted by nonmetallic catalysts of carbonates, sulfates, or phosphorus under high pressure and high temperature has been investigated by calculating the activation energy and transformation probability of the carbon atoms over a potential barrier. It was found that the activation energy is highly sensitive to the catalyst chosen. The value of activation energy in the systems of graphite-carbonates, graphite-phosphorus, and graphite-sulfate are 130.71 × 103, 206.03 × 103, and 221 × 103 J/mol, respectively. If fd stands for the probability of the transformation from graphite to diamond, the probability sequence of graphite-diamond transformation in different systems was put forward: fd(gr.-carbonate) > fd(gr.-phosphorus). fd(gr.-sulfate).


2017 ◽  
Vol 37 (8) ◽  
pp. 0801002
Author(s):  
高乾坤 Gao Qiankun ◽  
刘文清 Liu Wenqing ◽  
张玉钧 Zhang Yujun ◽  
高闽光 Gao Minguang ◽  
李相贤 Li Xiangxian ◽  
...  

1966 ◽  
Vol 21 (11) ◽  
pp. 1970-1975 ◽  
Author(s):  
G. Römelt

By X-rays, ultraviolet, and γ-radiation or by heating to more than 1850 °C in powdered or sintered boronnitride centres are produced, which give an EPR-spectrum with 10 lines a=7.8 ± 0.1 Gauss apart with g=2.0027 ± 0.0003 for BN of natural isotopic composition (81.17% 11B; 18.83% 10B), and a single line for 10BN enriched to 91% 10B. The spectra are analysed as built up from 4 systems of spectra, caused by surroundings of 3 boron atoms, 3, 2, 1, or 0 of which are 11B, each occuring with the proper probability. The intensity of the different systems was calculated by assuming GAussian line shape and equal | ψ (0) |2 and line width for 11B and 10B. It is possible, that the EPR is caused by impurity atoms on the places of N or in the centre of B3N3-rings. Other spectra caused in BN by X-rays or by neutrons in a pile are discussed elsewhere 3, 8.


2017 ◽  
Vol 64 (8) ◽  
pp. 3399-3404 ◽  
Author(s):  
Christian David Matthus ◽  
Tobias Erlbacher ◽  
Andreas Hess ◽  
Anton J. Bauer ◽  
Lothar Frey

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