Successive Magnetic Phase Transitions in RbVBr3

Autor:	Katsunori Iio, T. Kato, Hidekazu Tanaka, Kazukiyo Nagata
Rok vydání:	1992
Předmět:	Hysteresis Materials science Condensed matter physics Ferromagnetism Magnetic structure Ferrimagnetism Phase (matter) General Physics and Astronomy Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Magnetic hysteresis Magnetic susceptibility
Zdroj:	Journal of the Physical Society of Japan. 61:3292-3302
ISSN:	1347-4073 0031-9015
DOI:	10.1143/jpsj.61.3292
Popis:	The magnetic properties of RbVBr 3 with a deformed CsNiCl 3 structure were investigated by means of the susceptibility and torque measurements. RbVBr 3 undergoes the successive transitions, T N1 =28.0 K and T N2 =21.3 K and 19.0 K on heating and cooling, respectively. A large hysteresis was observed for the transition at T N2 . Metastable states appear between the intermediate phase and low-temperature phase. The intermediate phase has the weak ferromagnetic moment of the order of 10 -5 µ B perpendicular to the c-axis, while the low-temperature phase does not. It is compatible with the crystal structure that the weak moment due to the Dzyaloshinsky-Moriya interaction appears in linear chains. It is concluded that in the intermediate phase the spins form a collinear structure, probably ferrimagnetic one in the c-plane and a triangular one in the low-temperature phase.
Databáze:	OpenAIRE
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