Single-domain-wall states in millimeter-scale samples of ErFeO3

• Type: Article in International Scientific Journal
• Date: 2009

Authors

Tsymbal, LT (Author) Other; G.N. Kakazei (Author) REIT; Bazaliy, YB (Author) Other

Journal

Title: Physical Review B - Condensed Matter and Materials Physics

Vol. 79

ISSN: 1098-0121

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 14 Citations

Scopus - 15 Citations

Other information

Authenticus ID: P-003-N19

DOI: 10.1103/physrevb.79.092414

Abstract (EN): Hysteresis loops in a 3.9x3.9x3.1 mm(3) single-crystal ErFeO3 sample were studied in the 4 < T < 70 K temperature interval. Above and near the compensation point T-comp=46 K the hysteresis loops are rectangular, with the coercive force diverging at T-comp. As the temperature is lowered toward the erbium ordering transition at T-N2=4.1 K, the shape of the loops experiences a dramatic change. First, the loops develop triangular "tails." Then the triangles become prominent while the central rectangular part collapses. A double-loop hysteresis pattern with two triangular loops emerges. This behavior is explained by a reversible motion of a single magnetic domain wall in the sample. The simplicity of the magnetic state is related to the small magnetization and correspondingly large domain sizes in orthoferrites. Our model reproduces the correlation of the loops' shape with the temperature dependence of the total magnetic moment of ErFeO3.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4