Electroni doping of Ca4Mn3O10 induced by vanadium substitution

abstract

In this work, electron doping of the anisotropic phase Ca4Mn3O10 was achieved by substitution of manganese by vanadium. No significant structural modifications were detected to the highest Substitution ratio of 10% achieved. The introduction of vanadium decreases the electrical resistivity. described as two-dimensional variable range hopping, and induces the appearance of it ferromagnetic behavior. Consistently negative magnetoresistance develops in the magnetic ordered state. These results are characteristic of the presence of double exchange interactions, indicating that vanadium doping induces mixed valence of manganese.

keywords

RUDDLESDEN-POPPER COMPOUND; GIANT MAGNETORESISTANCE; PHYSICAL-PROPERTIES; CRYSTAL; FERROMAGNETISM; MANGANATES; OXIDES; CAMNO3; SITE

subject category

Chemistry; Materials Science

authors

Carvalho, MD; Borges, RP; Girao, AV; Cruz, MM; Jorge, MEM; Bonfait, G; Dluzewski, P; Godinho, M

our authors

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".