CERN Accelerating science

Preprint
Report number	JINR-P3-2005-36 ; P3-2005-36
Title	Neutron Diffraction Refinement of SrRuO$_{3 }$ Crystal and Magnetic Structures
Author(s)	Bushmeleva, S N ; Balagurov, A M ; Pomjakushin, V Yu ; Pomjakushina, E V ; Sheptyakov, D V
Affiliation	(LDM, ETH Zurich and Paul Scherrer Institute, CH-5232, Villigen PSI, Switzerland) ; (LNS, ETH Zurich and Paul Scherrer Institute, CH-5232, Villigen PSI, Switzerland) ; (Frank Laboratory of Neutron Physics, Dubna)
Publication	2005
Imprint	25 Mar 2005
Number of pages	10
Subject category	Particle Physics - Experiment
Abstract	In neutron diffraction experiment precision data about crystal and magnetic structures of SrRuO$_{3}$ have been obtained. In ferromagnetic state the ordered Ru magnetic moment is equal to $\mu_{\rm Ru}$=(1.63 $\pm$ 0.06) $\mu_{\rm B}$ at $T$=10 K. This value agrees well with the results of recent calculations, predicting the possibility of the band ferromagnetism in SrRuO$_{3}$ with reduced ordered moment. Crystal structure of SrRuO$_{3}$ remains unchanged in the temperature range of 1.5-290 ?. It was found also that the so-called "Invar effect" in SrRuO$_{3}$ (zero thermal expansion) below phase transition into ferromagnetic phase, is conditioned by mutual rotation of oxygen octahedra.
Submitted by	[email protected]