Nuclear Quadrupole Interaction and Effective Charges of Atoms in YBa2Cu3O7_x and La2_xSrxCuO4 Crystals

УДК 53:548

  • V.A. Doronin A.l. Herzen State Pedagogical University of Russia (St. Petersburg, Russia) Email: doroninslava@rambler.ru
  • A.V. Marchenko A.l. Herzen State Pedagogical University of Russia (St. Petersburg, Russia) Email: al7140@rambler.ru
DOI_disc_logo https://doi.org/10.14258/izvasu(2019)4-04
Keywords: nuclear quadrupole interaction parameters, Mossbauer spectroscopy, nuclear magnetic resonance, high-temperature superconductors

Abstract

A comparison was made of the parameters of the Mossbauer emission spectra on 57Co(57mFe), 67Cu(67Zn), 67Ga(67Zn), 155Eu(155Gd) isotopes and the 17O, 137Ba nuclear magnetic resonance parameters with the calculated parameters of the lattice tensor of the electric field gradient for all sites of crystal lattices high-temperature superconductors based on copper metal oxides YBa2Cu3O7 and La2-xSrxCuO4. Agreement between the experimental and calculated parameters of the electric field gradient tensor can be obtained only for models when the hole arising due nonstoichiometry compounds YBa2Cu3O7 or aliovalent substitution of La3+ for Sr2+ in the compounds La2-xSrxCuO4, is preferably in the sublattice chain (in YBa2Cu3O7) or planar (in La2-xSrxCuO4) oxygen. Confirmation of the proposed model of the spatial distribution of electronic defects in La2-x Srx CuO4 lattices (x = 0.1 - 1.0) was obtained by comparing the calculated dependences of the ratio of the principal components of the electric field gradient tensors at lanthanum and copper nodes with the ratio of the quadrupole interaction constant at these nodes for 57mFe3+, 67Zn2+ probes and 155Ga3+. The observed dependences can be quantitatively explained if the hole is localized mainly in the positions of the planar oxygen atoms. The Sternheimer coefficients for 67Zn2+, 137Ba2+ and 17O2- probes were determined using these models.

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Author Biographies

V.A. Doronin, A.l. Herzen State Pedagogical University of Russia (St. Petersburg, Russia)

ассистент кафедры физической электроники

A.V. Marchenko, A.l. Herzen State Pedagogical University of Russia (St. Petersburg, Russia)

доктор физико-математических наук, доцент, профессор кафедры физической электроники

References

Seregin N., Marchenko A., Seregin P. Emission Mössbauer spectroscopy. Electron defects and Bose-condensation in crystal lattices of high-temperature supercomductors. Germany: LAP LAMBERT. Academic Publishing GmbH & Co. KG Saarbrücken, 2012.

Takigawa M., Hammel P.C., Heffner R.H., Fisk Z. and other. 17O NMR study of local spin susceptibility in aligned YBa2Cu3O7 powder // Phys. Rev. Lett. 1989. Vol. 63.

Tomeno I., Machi T., Tai K., Koshizuka N., Kambe S., Hayashi A., Ueda Y. NMR study of spin dynamics at planaroxygen and copper sites in YBa2Cu308 // Physical Review B. 1994. Vol. 49.

Ishida K. 170 and 63Cu NMR Investigations of high-Tc superconductor La1.85Sr0.15Cu04with Tc = 38 K / K. Ishida, Y. Kitaoka, G Zheng // Phys. Soc. Jap. 1991. V. 60.

Shore J. Barium nuclear resonance spectroscopic study of YBa2Cu307. / J. Shore, S. Yang, J. Haase, D. Schwartz, E 0ldfie2ld /3/ P7hysical Review B. 1992. Vol. 46.

Доронин В.А., Рабчанова Т.Ю., Серегин П.П. Сверхтонкие взаимодействия в узлах меди решеток высокотемпературных сверхпроводников, изученные методом мессбауэровской спектроскопии // Известия Российского гос. пед. ун-та им. А.И. Герцена. 2013. № 157.

Бордовский Г.А., Марченко А.В., Доронин В.А., Рабчанова Т.Ю., Серегин П.П. Тензор градиента электрического поля в позициях редкоземельных металлов в решетках RBa2Cu3O7 // Физика и химия стекла. 2014. Т. 40. № 4.

LePage Y., Siegrist Т., Sunshine S.A., Schneemeyer L.P., Murphy D.W. and other. Neutron diffraction of atomic displacements in RBa2Cu3O7 // Phys.Rev. B. 1987. Vol. 36.

Ivon K., Francois M. Crystal structure of high-Tc oxides // Zeitschrift fur Physik B. Condensed Matter. 1989. Vol. 76.

Tarascon J.M., Greene L.H. Superconductivity at 40 K in the oxygen-defect La2xSrxCuO4y // Science. 1987. Vol 236.

Published
2019-09-12
How to Cite
Doronin V., Marchenko A. Nuclear Quadrupole Interaction and Effective Charges of Atoms in YBa2Cu3O7_x and La2_xSrxCuO4 Crystals // Izvestiya of Altai State University, 2019, № 4(108). P. 32-35 DOI: 10.14258/izvasu(2019)4-04. URL: http://izvestiya.asu.ru/article/view/%282019%294-04.
Issue
No 4(108) (2019): Izvestiya of Altai State University
Section
Физика

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