http://www.cnr.it/ontology/cnr/individuo/prodotto/ID2997

Crystal and magnetic structures of (La0.70Ca0.30)(CryMn1-y)O-3: A neutron powder diffraction study (Articolo in rivista)

Type

Label

Crystal and magnetic structures of (La0.70Ca0.30)(CryMn1-y)O-3: A neutron powder diffraction study (Articolo in rivista) (literal)

Anno

Alternative label

Capogna, L; Martinelli, A; Francesconi, MG; Radaelli, PG; Carvajal, JR; Cabeza, O; Ferretti, M; Castellano, C; Corridoni, T; Pompeo, N (2008)
Crystal and magnetic structures of (La0.70Ca0.30)(CryMn1-y)O-3: A neutron powder diffraction study
in Physical review. B, Condensed matter and materials physics
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Capogna, L; Martinelli, A; Francesconi, MG; Radaelli, PG; Carvajal, JR; Cabeza, O; Ferretti, M; Castellano, C; Corridoni, T; Pompeo, N (literal)

Pagina inizio

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

Rivista

Note

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

\"[Capogna, L.] INFM CNR SOFT, F-38042 Grenoble, France; [Martinelli, A.; Ferretti, M.; Castellano, C.] INFM LAMIA CNR, I-16152 Genoa, Italy; [Francesconi, M. G.] Univ Hull, Dept Chem, Kingston Upon Hull HU6 7RX, N Humberside, England; [Radaelli, P. G.] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England; [Carvajal, J. Rodriguez] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France; [Cabeza, O.] Univ Coruna, Fac Ciencias, Dept Fis, La Coruna 15071, Spain; [Ferretti, M.] Univ Genoa, Dipartimento Chim & Chim Ind, I-16146 Genoa, Italy; [Corridoni, T.; Pompeo, N.] Univ Roma Tre, Dipartimento Fis E Amaldi, I-00146 Rome, Italy (literal)

Titolo

Crystal and magnetic structures of (La0.70Ca0.30)(CryMn1-y)O-3: A neutron powder diffraction study (literal)

Abstract

The crystal and magnetic structures of (La0.70Ca0.30)(CryMn1-y)O-3 for y = 0.70, 0.50, and 0.15 have been investigated using neutron powder diffraction. The three samples crystallize in the Pnma space group at both 290 and 5 K and exhibit different magnetic structures at low temperature. In (La0.70Ca0.30)(Cr0.70Mn0.30)O-3, antiferromagnetic order with a propagation vector k = 0 sets in. The magnetic structure is G(x), i.e., of G type with spins parallel to the a axis. On the basis of our Rietveld refinement and the available magnetization data, we speculate that only Cr3+ spins order, whereas Mn4+ act as random magnetic impurities. In (La0.70Ca0.30)(Cr0.50Mn0.50)O-3 the spin order is still of the type Gx, although the net magnetic moment is smaller. No evidence for magnetic order of the Mn ions is observed. Finally, in (La0.70Ca0.30)(Cr0.15Mn0.85)O-3 a ferromagnetic ordering of the Mn spins takes place, whereas the Cr3+ ions act as random magnetic impurities with randomly oriented spins. (literal)

Prodotto di