Direct Evidence of the Existence of Field-Induced Canted Sperimagnets Detected by X-Ray Magnetic Circular Dichroism

L.M. Garcia; S. Pizzini; J.P. Rueff; J. Vogel; R.M. Galera; A. Fontaine; J.B. Goedkoop; N.B. Brookes; J.P. Kappler; G. Krill

doi:doi:10.1051/jp4/1997028

Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure

J. Phys. IV France 7 (1997) C2-397-C2-400
DOI: 10.1051/jp4/1997028

Direct Evidence of the Existence of Field-Induced Canted Sperimagnets Detected by X-Ray Magnetic Circular Dichroism

L.M. Garcia¹, S. Pizzini², J.P. Rueff², J. Vogel², R.M. Galera², A. Fontaine³, J.B. Goedkoop⁴, N.B. Brookes⁴, J.P. Kappler⁵ and G. Krill⁶

¹ ICMA, CSIC-U, de Zaragoza, 50009 Zaragoza, Spain
² Laboratoire L Néel, CNRS, BP. 166X, 38042 Grenoble cedex, France
³ Laboratoire. Néel, CNRS, BP. 166X, 38042 Grenoble cedex, France
⁴ ESRF, BP. 220, 38043, Grenoble, France
⁵ LURE, Bât. 209D, Centre Universitaire Paris Sud, 91405 Orsay cedex France
⁶ LURE, Bât. 209D, Centre Universitaire Paris Sud, 91405 Orsay cedex, France

Abstract
In the present paper we study the magnetic phase diagram of an Er_1-xFe_x amorphous alloy close to the compensation temperature by means of X-ray Magnetic Circular Dichroism (XMCD). Temperature-dependent XMCD studies have allowed us to determine independently the magnetic moment of Er and Fe subnetworks. These microscopic results compare satisfactorily with macroscopic magnetization data. Field dependent XMCD experiments performed close to Tcomp have unambiguously proven the existence of field-induced canted sperimagnetic structures, which had been theoretically predicted but had yet to be proven experimentally.