Grain-Porous Investigations of the Cu0.4Ni0.4Co0.4Mn1.8O4 Ceramics

Phase compositions, microstructural properties and pore size distribution in the Cu
_0.4
Ni
_0.4
Co
_0.4
Mn
_1.8
O
₄
ceramics in micro and macro modifications were investigated. It is shown that the micro and macro modified Cu
_0.4
Ni
_0.4
Co
_0.4
Mn
_1.8
O
₄
ceramics are single-phase (contains only the main cubic spinel phase with cell parameter of 8.36504 (19) Åand 8.36505 (20) Å for the micro and macro modified Cu
_0.4
Ni
_0.4
Co
_0.4
Mn
_1.8
O
₄
, respectively). Different modifications of ceramics are displayed in the size and shape of pores. In micro modified Cu
_0.4
Ni
_0.4
Co
_0.4
Mn
_1.8
O
₄
ceramics there is a more intensive growth of the contact area between the grains. increases the specific surface area. The grain is combined into agglomerates. One peak with nanopore with radius centered near ~ 2 nm is peculiar to macro modified Cu
_0.4
Ni
_0.4
Co
_0.4
Mn
_1.8
O
₄
ceramics. Double maximum is characteristic to micro ceramics (~2.3 and 5.5 nm).