Electronic and magnetic properties of (Bi^sub 0.5^Na^sub 0.5^)(Mn^sub 0.5^Nb^sub 0.5^)O^sub 3

(Bi...Na...)(Mn...Nb...)O... has been sintered by hot-sintering method at ambient air. Composition has been checked with use of a scanning microscope. Magnetic behavior of (Bi...Na...)(Mn...Nb...)O... has been investigated by DC magnetization and AC susceptibility techniques. (Bi...Na...)(Mn...Nb......

Full description

Saved in:
Bibliographic Details
Published in:Phase transitions 2014-10, Vol.87 (10-11), p.1096
Main Authors: Bujakiewicz-Koronska, Renata, Nalecz, Dawid M, Balanda, Maria, Molak, Andrzej, Ujma, Zbigniew
Format: Article
Language:English
Subjects:
Air
Chemical precipitation
Electronics
Magnetism
Sintering
Temperature
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:(Bi...Na...)(Mn...Nb...)O... has been sintered by hot-sintering method at ambient air. Composition has been checked with use of a scanning microscope. Magnetic behavior of (Bi...Na...)(Mn...Nb...)O... has been investigated by DC magnetization and AC susceptibility techniques. (Bi...Na...)(Mn...Nb...)O... exhibits a magnetic phase transition at 6.8 K. Below this temperature, the interaction between magnetic moments is antiferromagnetic. The resultant non-zero magnetic moment emerges because of weak precipitation of manganese oxide with ordering temperature at T ... 40 K. From the fit of the Curie-Weiss law to the AC susceptibility, the Weiss temperature ... = -2.3 K has been determined and Curie constant C = 1.15 emu K/mol..., close to the value expected for spin S = 2 of Mn..., has been estimated. The antiferromagnetic state with spin-glass type features has been deduced. Crystal structures and partial density of states (DOS) have been simulated by ab initio method. DOS simulations showed half-metal electronic structure of (Bi...Na...)(Mn...Nb...)O... (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0141-1594
1029-0338