Galvanomagnetic properties and electronic structure of iron-doped PbTe

AbstractThe field and temperature dependences of the magnetization (magnetic fields B ≤ 7.5 T, temperatures T = 2.0–75 K) of samples from a Pb_1– x – y Sn_ x V_ y Te ( x = 0.08, y = 0.01) single-crystal ingot synthesized by the Bridgman–Stockbarger method. It is established that the sample magnetization contains two main contributions, notably, the paramagnetism of vanadium ions and diamagnetism of the crystal lattice. The field and temperature dependences of the magnetization are approximated by the sum of modified Brillouin functions corresponding to the paramagnetic contributions of vanadium in two different charge states and the diamagnetic contribution linear in terms of field. The concentrations of vanadium ions in two different magnetic states and the character of their variation along the ingot are determined within the scope of the alloy’s electronic-structure rearrangement because of doping. The results are compared with the data of X-ray fluorescence microanalysis and the results of studying the galvanomagnetic properties of the samples.

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Iron-doped cuprous oxides toward accelerated nonradical oxidation: Doping induced controlled facet transformation and optimized electronic structure

Chemical Engineering Journal ◽

10.1016/j.cej.2020.127172 ◽

2021 ◽

Vol 407 ◽

pp. 127172

Author(s):

Huarui Li ◽

Panpan Zhang ◽

Yan Guo ◽

Jialin Jia ◽

Shaobin Wang ◽

...

Keyword(s):

Electronic Structure ◽

Iron Doped

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Effect of scandium doping and of matrix composition variation on galvanomagnetic properties and electronic structure of Pb1-x-ySnxScyTe alloys

Materials Research Bulletin ◽

10.1016/j.materresbull.2020.111002 ◽

2020 ◽

Vol 132 ◽

pp. 111002

Author(s):

E.P. Skipetrov ◽

A.V. Khvorostin ◽

A.V. Knotko ◽

V.E. Slynko

Keyword(s):

Electronic Structure ◽

Matrix Composition ◽

Galvanomagnetic Properties ◽

Composition Variation

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Electronic structure and optical index damage of iron‐doped lithium niobate

The Journal of Chemical Physics ◽

10.1063/1.1680000 ◽

1973 ◽

Vol 59 (12) ◽

pp. 6209-6219 ◽

Cited By ~ 162

Author(s):

M. G. Clark ◽

F. J. DiSalvo ◽

A. M. Glass ◽

G. E. Peterson

Keyword(s):

Electronic Structure ◽

Lithium Niobate ◽

Optical Index ◽

Iron Doped

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Galvanomagnetic and Magnetic Properties of Pb1-yScyTe

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.233-234.97 ◽

2015 ◽

Vol 233-234 ◽

pp. 97-100 ◽

Cited By ~ 1

Author(s):

E.P. Skipetrov ◽

M.M. Markina ◽

K.V. Zakharov ◽

L.A. Skipetrova ◽

A.A. Solovev ◽

...

Keyword(s):

Magnetic Field ◽

Magnetic Properties ◽

Electronic Structure ◽

Impurity Content ◽

Free Electron Concentration ◽

Resonant Level ◽

Structure Rearrangement ◽

Galvanomagnetic Properties ◽

Weak Magnetic Fields ◽

Heavily Doped

The galvanomagnetic properties in weak magnetic fields (4.2≤T≤300 K, B≤0.07 T) as well as magnetic properties (2≤T≤300 K, B≤9 T) of the single-crystal Pb1-yScyTe (y≤0.02) alloys have been investigated. We find that an increase of Sc impurity content leads to a monotonous growth of the free electron concentration (from 1016 cm-3 to 1020 cm-3). In heavily doped alloys (y>0.01), it tends to saturation, indicating the pinning of the Fermi energy by the scandium resonant level located inside the conduction band. The energy of the level is estimated (ESc≈Ec+280 meV) and the model of electronic structure rearrangement of Pb1-yScyTe alloys with doping is proposed. In the frame of this model, using experimental temperature and magnetic field dependences of magnetization, the concentrations of magnetically active scandium ions are determined and connection of the electronic structure with the magnetic properties of the alloys are discussed.

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Влияние примеси никеля на гальваномагнитные свойства и электронную структуру PbTe

Физика и техника полупроводников ◽

10.21883/ftp.2020.10.49932.9417 ◽

2020 ◽

Vol 54 (10) ◽

pp. 987

Author(s):

Е.П. Скипетров ◽

Б.Б. Ковалев ◽

И.В. Шевченко ◽

А.В. Кнотько ◽

В.Е. Слынько

Keyword(s):

Electronic Structure ◽

Hall Coefficient ◽

Impurity Concentration ◽

Inversion Layer ◽

Impurity Band ◽

Anomalous Temperature ◽

Conduction Mechanisms ◽

Galvanomagnetic Properties ◽

Temperature Dependences ◽

Increasing Temperature

The phase and elemental composition and galvanomagnetic properties (4.2 < T < 300 K, B < 7 T) of Pb1-yNiyTe alloys are studied at a variation of the nickel impurity concentration along the single-crystal ingot synthesized by the Bridgman-Stockbarger technique. It is shown that the solubility of nickel does not exceed 0.35 mol %. Anomalous temperature dependences of the Hall coefficient and temperature and field dependences of magnetoresistance are found. To explain the results, it is assumed that an n-type inversion layer appears on the surface of the samples and that there are several competing conduction mechanisms in the samples. A model of the Pb1-yNiyTe electronic structure is proposed that assumes pinning of the Fermi level within the Ni impurity band, located at the edge of the valence band and moving deeper into it with increasing temperature.

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