JETP Letters, volume 99, issue 2, pages 82-88

Determination of the positions of impurity centers in a dislocation core in a NaCl crystal from magnetoplasticity spectra

Publication typeJournal Article
Publication date2014-03-01
Journal: JETP Letters
Quartile SCImago
Q2
Quartile WOS
Q4
Impact factor1.3
ISSN00213640, 10906487
Physics and Astronomy (miscellaneous)
Abstract
The spectra of the mean free paths l(ν) of edge dislocations have been studied in NaCl crystals exposed in the electron paramagnetic resonance scheme to the crossed magnetic fields: the Earth’s field (50 μT) and the pump field (2.5 μT, 5–440 kHz). The spectra have been measured for a series of angles θ = 0°–5° of rotation of the sample around its edge [100] with respect to the Earth’s field. The fine structure of the spectra contains a series of peaks whose resonance frequencies are described by the empirical expression v ± = Asin(θ ± Δθ i ) ≈ A(θ ± Δθ i ). The parameters Δθ i are independent of the angle θ within the experimental errors. Within the model of “frozen” magnetic moments associated with impurity center Ca+-Cl0, the angles Δθ i characterize the deviation of the axis of the center from the 〈100〉 direction in the core of a dislocation. These angles can be expressed in terms of the spectra obtained: Δθ i = (− + − v − )/2A. The computer simulation of the edge dislocation core provides the set of the angles Δθ i close to the measured values. The spin-lattice relaxation time of the center on dislocation has been estimated from the low-frequency edge of the spectrum l(ν) as τ s − l ∼ 10−4 s.

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Alshits V. et al. Determination of the positions of impurity centers in a dislocation core in a NaCl crystal from magnetoplasticity spectra // JETP Letters. 2014. Vol. 99. No. 2. pp. 82-88.
GOST all authors (up to 50) Copy
Alshits V., Koldaeva M. V., Petrzhik E. A., Belov A., Darinskaya E. V. Determination of the positions of impurity centers in a dislocation core in a NaCl crystal from magnetoplasticity spectra // JETP Letters. 2014. Vol. 99. No. 2. pp. 82-88.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1134/S0021364014020039
UR - https://doi.org/10.1134%2FS0021364014020039
TI - Determination of the positions of impurity centers in a dislocation core in a NaCl crystal from magnetoplasticity spectra
T2 - JETP Letters
AU - Alshits, V.I.
AU - Petrzhik, E A
AU - Belov, A.Yu.
AU - Darinskaya, E V
AU - Koldaeva, M V
PY - 2014
DA - 2014/03/01 00:00:00
PB - Pleiades Publishing
SP - 82-88
IS - 2
VL - 99
SN - 0021-3640
SN - 1090-6487
ER -
BibTex |
Cite this
BibTex Copy
@article{2014_Alshits,
author = {V.I. Alshits and E A Petrzhik and A.Yu. Belov and E V Darinskaya and M V Koldaeva},
title = {Determination of the positions of impurity centers in a dislocation core in a NaCl crystal from magnetoplasticity spectra},
journal = {JETP Letters},
year = {2014},
volume = {99},
publisher = {Pleiades Publishing},
month = {mar},
url = {https://doi.org/10.1134%2FS0021364014020039},
number = {2},
pages = {82--88},
doi = {10.1134/S0021364014020039}
}
MLA
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MLA Copy
Alshits, V.I., et al. “Determination of the positions of impurity centers in a dislocation core in a NaCl crystal from magnetoplasticity spectra.” JETP Letters, vol. 99, no. 2, Mar. 2014, pp. 82-88. https://doi.org/10.1134%2FS0021364014020039.
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