Search results

Sort By:

Limit search:

Magnetic Structure and Phase Diagram of TmB_4

100%

Gabáni S., Maťaš S., Priputen P., Flachbart K., Siemensmeyer K., Wulf E., Evdokimova A., Shitsevalova N.

Acta Physica Polonica A

2008

vol. 113

issue 1

227-230

Magnetic structure of single crystalline TmB_4 has been studied by magnetization, magnetoresistivity, and specific heat measurements. A complex phase diagram with different antiferromagnetic phases was observed below T_{N1}=11.7 K. Besides the plateau at half-saturated magnetization (1/2 M_S), also plateaus at 1/9, 1/8 and 1/7 of M_S were observed as a function of applied magnetic field Bparallel c. From additional neutron scattering experiments on TmB_4, we suppose that these plateaus arise from a stripe structure which appears to be coherent domain boundaries between antiferromagnetic-ordered blocks of 7 or 9 lattice constants. The received results suggest that the frustration among the Tm^{3+} magnetic ions, which maps to a geometrically frustrated Shastry-Sutherland lattice, leads to a strong competition between antiferromagnetic and ferromagnetic order. Thus, stripe structures in intermediate field appear to be the best way to minimize the magnetostatic energy against other magnetic interactions among the Tm ions combined with very strong Ising anisotropy.

Refine search results

1 Acta Physica Polonica A

1 2008

1 Evdokimova A.

1 Flachbart K.

1 Gabáni S.

1 Maťaš S.

1 Priputen P.

1 Shitsevalova N.

1 Siemensmeyer K.

1 Wulf E.

Search results

Magnetic Structure and Phase Diagram of TmB_4