Magnetic and electronic properties of the oxygen-deficient PrBaCo2O5+d (d>0.50)

J.L. GARCÍA MUÑOZ; C. FRONTERA; A. LLOBET; A E. CARRILLO; A. CANEIRO; M. A. G. ARANDA; M. REPAUD; C. RITTER; E DOORYEE

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2004 vol. 272 p. 1762 - 1763

0304-8853

We have investigated the evolution of the structural and magnetic properties with d in PrBaCo2O5+d compoundswith high oxygen content (d=0.75, 0.85, 0.90). In zero field only the two latter are ferromagnetic (FM). PrBaCo2O5.75presents antiferromagnetic order below TN=175 K, although a FM phase is easily induced under field. From neutrondiffraction, using a single moment G-type model, the ordered moment at 2K is found to be 1.14(6) mB/Co ion.Remarkable magnetoelastic effects occur at TN (d=0.75), but are not observed at TC (d=0.85,0.90).r 2004 Elsevier B.V. All rights reserved.