Details

Autor(en) / Beteiligte

• Karneeva, S.S.
• Kalantarian, V.P.
• Guess, A.P.
• Fedotova, V.V.
• Shimchak, R.
• Shamsutdinov, M.A.

Titel

Magnetic properties of TmFeO3 and TmGa0.13Fe0.87O3 orthoferrites

Ist Teil von

• Journal of magnetism and magnetic materials, 1992-05, Vol.110 (3), p.327-330

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

1992

Quelle

Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)

Beschreibungen/Notizen

• The magnetization σc has been observed to depend strongly on temperature and biasing field in the Γ4-phase. Two families of σc (T) occur corresponding to the poly-domain (H < 200 Oe), and mono-domain (H > 200 Oe) states of the samples. This was proved by observation of domain structures in these samples. In addition to the maximum due to the second-order phase transition Γ2-Γ4, we have revealed a maximum in the susceptibility curves Xc(T) at the high-temperature point of phase transition. The second maximum strongly depends on the biasing field value. Domain structure behaviour in that temperature range, and in various external fields, allowed us to suggest that there exists a relation between this maximum and the shifting processes of domain boundaries, which create a significant susceptibility along the c-axis.