Magnetic Properties of Chain Antiferromagnets RbFeSe2, TlFeSe2, and TlFeS2

Vagizov Farit; Najafov A.; Gavrilova Tatyana; Günthera Axel; Seidov Zakir; Tsurkan Vladimir; Aliyev M. N.; Tagirov Lenar; Kiiamov Airat; Filippova Irina; H.-A. Krug von Nidda; Loidla Alois

Magnetic Properties of Chain Antiferromagnets RbFeSe2, TlFeSe2, and TlFeS2

Seidov Zakir; H.-A. Krug von Nidda; Tsurkan Vladimir; Filippova Irina; Günthera Axel; Najafov A.; Aliyev M. N.; Vagizov Farit; Kiiamov Airat; Tagirov Lenar; Gavrilova Tatyana; Loidla Alois

URI: http://dspace.kpfu.ru/xmlui/handle/net/116164

Date: 2017

Abstract:

Single crystals of ternary ion chalcogenides RbFeSe2, TlFeSe2, and TlFeS2 are studied by X-ray diffraction, SQUID magnetometry, and Mossbauer spectroscopy. Common structural units of these chalcogenides are tetrahedra of FeCh4 (chalcogen Ch = Se, S), arranged in chains by sharing an edge. It is found that RbFeSe2, TlFeSe2, and TlFeS2 undergo transition to a collinear antiferromagnetic state below temperatures TN = 248, 290, and 196 K, respectively. Their magnetic moments are oriented perpendicular to the axes of the chains of FeCh4 tetrahedra.

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