Zobrazeno 1 - 10
of 15
pro vyhledávání: '"T. M. Khapaeva"'
Publikováno v:
Doklady Mathematics. 98:603-606
For optimal control problems, a new approach based on the search for an extremum of a special functional is proposed. The differential problem is reformulated as an ill-posed variational inverse problem. Taking into account ill-posedness leads to a s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::122debd8c8914e199a4b210b89c18c2f
https://doi.org/10.1134/s1064562418070219
https://doi.org/10.1134/s1064562418070219
Autor:
M. M. Khapaev, T. M. Khapaeva
Publikováno v:
Computational Mathematics and Mathematical Physics. 56:1732-1736
A functional-based variational method is proposed for finding the eigenfunctions and eigenvalues in the Sturm–Liouville problem with Dirichlet boundary conditions at the left endpoint and Neumann conditions at the right endpoint. Computations are p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a10802208e477471fd40dd5e4f3cb966
https://doi.org/10.1134/s0965542516100109
https://doi.org/10.1134/s0965542516100109
Publikováno v:
Doklady Mathematics. 96:403-405
Interest in the inverse Sturm–Liouville problem is motivated by its numerous applications in mathematics and computational physics. To solve a complete inverse problem, one needs two exact spectra, which are usually not known in experimental spectr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc1f1f815ef2904da1ce54c63d6718ce
https://doi.org/10.1134/s1064562417040251
https://doi.org/10.1134/s1064562417040251
Autor:
T. M. Khapaeva, M. M. Khapaev
Publikováno v:
Mathematical Notes. 97:616-620
We present the variational method for finding the eigenfunctions and eigenvalues in the Sturm-Liouville problem with Dirichlet boundary conditions; the method is based on the proposed functional. As a test example, we consider the potential cos(4x).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7634742e6379f32edc9733b9a27b162
https://doi.org/10.1134/s0001434615030323
https://doi.org/10.1134/s0001434615030323
Autor:
T. M. Khapaeva, M. M. Khapaev
Publikováno v:
Matematicheskie Zametki. 97:604-608
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb3b97cbf58a6190640166863929e22e
https://doi.org/10.4213/mzm10642
https://doi.org/10.4213/mzm10642
Autor:
S. F. Marenkin, R. Szymczak, D. M. Zashchirinskii, I. V. Fedorchenko, A.I. Morozov, T. M. Khapaeva, L. I. Koroleva
Publikováno v:
Journal of Magnetism and Magnetic Materials. 323:2923-2928
Based on Mn-doped chalcopyrites CdGeAs 2 , ZnGeAs 2 and ZnSiAs 2 the new dilute magnetic semiconductors with p-type conductivity were produced. Magnetization, electrical resistivity, magnetoresistance and Hall effect of mentioned compositions were st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8d2f76eccca4c8cce42331e77271a9e
https://doi.org/10.1016/j.jmmm.2011.05.054
https://doi.org/10.1016/j.jmmm.2011.05.054
Manganese-Doped CdGeAs2, ZnGeAs2 and ZnSiAs2 Chalcopyrites: A New Advanced Materials for Spintronics
Autor:
T. M. Khapaeva, D. M. Zashchirinskii, I. V. Fedorchenko, L.A. Koroleva, S. F. Marenkin, R. Szymczak, B. Krzymanska, A. S. Morozov
Publikováno v:
Solid State Phenomena. :31-34
Based on the Mn-doped chalcopyrites CdGeAs2, ZnGeAs2 and ZnSiAs2, new dilute magnetic semiconductors with the p-type conductivity were produced. Magnetization, electrical resistivity and Hall effect of these compositions were studied. Their temperatu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b897ba6d8fc2d4dd3b99dd88db6bc1d0
https://doi.org/10.4028/www.scientific.net/ssp.168-169.31
https://doi.org/10.4028/www.scientific.net/ssp.168-169.31
Autor:
T. M. Khapaeva, D. M. Zashchirinskii, L. I. Koroleva, I. V. Fedorchenko, B. Krzumanska, S. F. Marenkin, R. Szymczak, S. A. Varnavskii
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 74:1348-1351
New diluted magnetic semiconductors (CdGeAs2:Mn, ZnGeAs2: Mn, and ZnSiAs2: Mn chalcopyrites) were synthesized. Magnetization M, electrical resistivity, magnetoresistance, and the Hall effect of these compositions were examined. Although the M(T) curv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bcf38a86ae5f01f15a00a9ed52ddb82
https://doi.org/10.3103/s1062873810100059
https://doi.org/10.3103/s1062873810100059
Autor:
I. V. Fedorchenko, L. I. Koroleva, V. Dobrowolski, R. Szymczak, S. F. Marenkin, Lukasz Kilanski, S. A. Varnavskiy, D. M. Zashchirinskii, T. M. Khapaeva, B. Krzymanska, Vladimir M. Novotortsev
Publikováno v:
Solid State Phenomena. :311-314
Based on Mn-doped chalcopyrite ZnSiAs2 the new dilute magnetic semiconductor with p-type conductivity was produced. The Curie temperature behavior of the produced semiconductor is distinctly dependent on the Mn concentration: 325 K for 1 wt.% and 337
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47a08d15e646f2e8460e0a4d810633a5
https://doi.org/10.4028/www.scientific.net/ssp.152-153.311
https://doi.org/10.4028/www.scientific.net/ssp.152-153.311
Autor:
L.A. Koroleva, T. M. Khapaeva, Nikolay Kalanda, B.M. Trukhan, D. M. Zashchirinskii, L.I. Gurskii
Publikováno v:
Solid State Phenomena. :139-142
The influence of oxygen deficiency on magnetization, paramagnetic susceptibility, electrical resistivity, magnetoresistance and magnetostriction of La1-xSrxMnO3-y (x = 0, 0.2, 0.4; y = 0, 0.13, 0.2) is studied. These properties demonstrate that the f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e46fe9b04fe7e45fc3f2fc6992fa1e84
https://doi.org/10.4028/www.scientific.net/ssp.152-153.139
https://doi.org/10.4028/www.scientific.net/ssp.152-153.139