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Popov, E. A. Absorption of light by exchange-coupled ions in a 2D antiferromagnet / E. A. Popov, B. V. Beznosikov> // Phys. Solid State. - 2003. - Vol. 45, Is. 8. - P. 1475-1478, DOI 10.1134/1.1602882. - Cited References: 9
. - ISSN 1063-7834РУБ Physics, Condensed Matter Рубрики: OPTICAL-ABSORPTION RB2MNCL4 Аннотация: The optical absorption spectra of Rb2MnxCd1-xCl4 crystals are experimentally studied in the vicinity of a magnon sideband of the exciton band at a manganese content x ranging from 1.0 to 0.4. Additional absorption bands are observed with an increase in the magnetic structural disorder upon replacement of manganese ions by cadmium ions. An analysis of the evolution of the additional absorption bands in a magnetic field during the spin-flop phase transition and the change in the intensity with variations in the manganese content x demonstrates that these bands are associated with the excitation of the exchange-coupled pairs of manganese ions located in different environments in a plane square lattice. The phase boundary between the antiferromagnetic and spin-flop phases is constructed using the results of optical measurements. The manganese content corresponding to the magnetic percolation point is evaluated. (C) 2003 MAIK "Nauka/Interperiodica".
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Держатели документа: Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia Russian Acad Sci, LV Kirensky Phys Inst, Sierian Div, Krasnoyarsk 660036, Russia ИФ СО РАН Siberian State Aerospace University, Krasnoyarsk 660014, Russian Federation Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation Доп.точки доступа: Beznosikov, B. V.; Безносиков, Борис Валерьевич } Найти похожие
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