Magnetic Ordering of RAgSb_{2} Compounds

• Authors: G. André , F. Bourée , M. Kolenda , B. Leśniewska , A. Oleś , A. Szytuła
• Languages of publication: EN

Abstracts

EN

The magnetic structures of the polycrystalline samples of RAgSb_{2} (R=Ce, Pr, Nd, Tb-Tm) are determined. All compounds crystallize in the tetragonal ZrCuSi_{2}-type of crystal structure and except CeAgSb_{2} they are antiferromagnets with a Néel temperature of 11 K for R = Tb and 2 K for Tm. CeAgSb_{2} below T_{C}=9.5 K is ferromagnet with the magnetic moment equal to 0.33μ_{B} and parallel to c-axis. In NdAgSb_{2} the sine modulated magnetic ordering described by the wave vector k = (0.5435,0,0) is observed. Below T_{N} a collinear antiferromagnetic structure with the magnetic (a,a,2c) for R = Pr and (2a,a,c) for R = Tb, Dy, Ho, and Er is observed. For Ho-compound with an increase in temperature the coexistence of two structures is observed: commensurate collinear and incommensurate sine modulated. In TmAgSb_{2} the coexistence of the two phases is observed at T = 1.4 K. With an increase in temperature only the incommensurate phase stays.

Keywords

EN

75.30.Cr; 75.30.Kz; 75.50.Ee

Discipline

• 75.30.Cr: Saturation moments and magnetic susceptibilities
• 75.50.Ee: Antiferromagnetics
• 75.30.Kz: Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)(for ferroelectric phase transitions, see 77.80.B-; for superconductivity phase diagrams, see 74.25.Dw)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2000
• Volume: 97
• Issue: 5
• Pages: 771-774

Dates

published

2000-05

Contributors

author

G. André

• Laboratoire Léon Brillouin (CEA-CNRS) CEN-Saclay, 91191 Gif-Sur-Yvette Cedex, France

author

F. Bourée

• Laboratoire Léon Brillouin (CEA-CNRS) CEN-Saclay, 91191 Gif-Sur-Yvette Cedex, France

author

M. Kolenda

• Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland

author

B. Leśniewska

• Department of Physics and Nuclear Techniques, Academy of Mining and Metallurgy, Reymonta 19, 30-059 Kraków, Poland

author

A. Oleś

• Department of Physics and Nuclear Techniques, Academy of Mining and Metallurgy, Reymonta 19, 30-059 Kraków, Poland

author

A. Szytuła

• Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland

Identifiers

DOI

10.12693/APhysPolA.97.771