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Magnetic Ordering of RAgSb_{2} Compounds

100%

André G., Bourée F., Kolenda M., Leśniewska B., Oleś A., Szytuła A.

Acta Physica Polonica A

2000

vol. 97

issue 5

771-774

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.

Magnetic Structure of RNiGe and RPdSn Compounds

84%

André G., Bourée F., Bombik A., Oleś A., Sikora W., Kolenda M., Szytuła A., Pacyna A., Zygmunt A.

Acta Physica Polonica A

1994

vol. 85

issue 2

275-278

Magnetic properties including magnetic structure of ternary RNiGe (R = Tb-Er) and RPdSn (R = Ce, Tb-Ho) compounds are determined. In low temperatures an antiferromagnetic ordering is observed. For compounds with R = Tb-Er the magnetic structure changes with temperature.

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2 Acta Physica Polonica A

1 2000

1 1994

2 André G.

2 Bourée F.

2 Kolenda M.

2 Oleś A.

2 Szytuła A.

1 Bombik A.

1 Leśniewska B.

1 Pacyna A.

1 Sikora W.

1 Zygmunt A.

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Magnetic Ordering of RAgSb_{2} Compounds

Magnetic Structure of RNiGe and RPdSn Compounds