VASILIEV, A.; VOLKOVA, O. S.; PRESNIAKOV, Igor; BARANOV, Alexey; DEMAZEAU, Gérard; BROTO, Jean-Marc; MILLOT, Marius; LEPS, N.; KLINGELER, R.; BÜCHNER, B.; STONE, M. B.; ZHELUDEV, A.

doi:10.1088/0953-8984/22/1/016007

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VASILIEV, A.
Chair of Radiochemistry, Department of Chemistry

VOLKOVA, O. S.
Chair of Radiochemistry, Department of Chemistry

PRESNIAKOV, Igor
Chair of Radiochemistry, Department of Chemistry

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Journal of Physics: Condensed Matter. 2010, vol. 22, n° 1, p. 016007 (6 p.)

IOP Publishing

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We present thermodynamic and neutron scattering data on silver ferrite AgFeO2. The data imply that strong magnetic frustration Θ/TN~10 and magnetic ordering arise via two successive phase transitions at T2 = 7 K and T1 = 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 an eighth and a quarter of the saturation magnetizations. Unlike for the 'classical' delafossite CuFeO2, the wavevector of the magnetic structure is independent of temperature both at T<T2 and at T2<T<T1.< Réduire

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Crystalline solids

Magnetism

Neutron diffraction

Inorganic compounds

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Thermodynamic properties and neutron diffraction studies of silver ferrite AgFeO<sub>2</sub>

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