Publication Type
Journal
Journal Name
Journal of Physics: Condensed Matter
Publication Date
Page Number
016007
Volume
22
Issue
1
Abstract
We present thermodynamic and neutron scattering data on silver ferrite AgFeO2. The data imply strong magnetic frustration /TN ~ 10 and magnetic ordering takes place via two successive phase transitions at Т2 = 7 K and Т1 = 16 K. At T < T2, two metamagnetic phase transitions at B1 ~ 14 T and B2 ~ 30 T can be identified through the change of slope in the magnetization curve measured up to 53 T. These transitions roughly correspond to 1/8 and 1/4 of the saturation magnetizations. Unlike in the “classical” delafossite CuFeO2, the wave vector of the magnetic structure both at T < T2 and at T2 < T < T1 is independent of temperature.
