464
H. Klym et al.
Fig. 29.3 Comparison of experimental XRD patterns for crystalline phase of micro- (a) and
macro-modified (b) Cu 0.4 Co 0.4 Ni 0.4 Mn 1.8 O 4 ceramics
Fig. 29.4 Scanning electron micrographs for micro- (a) and macro-modified (b)
Cu 0.4 Co 0.4 Ni 0.4 Mn 1.8 O 4 ceramics
Open pore size distributions for micro- and macro-modified Cu 0.4 Co 0.4 Ni 0.4
Mn 1.8 O 4 ceramics are shown in Fig. 29.5. Such distributions cover significant
amount of charge-transferring nanopores depending on sintering procedure and
small amount of communication mesopores [11, 20]. In contrast to humiditysensitive MgAl 2 O 4 ceramics, temperature-sensitive Cu 0.4 Co 0.4 Ni 0.4 Mn 1.8 O 4
ceramics practically do not possess outside-delivering macropores depending
on specific surface area of initial powder [5]. Thus, Cu 0.4 Co 0.4 Ni 0.4 Mn 1.8 O 4
ceramics prepared at 1100 ◦ C exhibit so-called one-modal pore size distribution
with maximum position near 2 nm and double-maximum near 2.3 and 5.5 nm for
H. Klym et al.
Fig. 29.3 Comparison of experimental XRD patterns for crystalline phase of micro- (a) and
macro-modified (b) Cu 0.4 Co 0.4 Ni 0.4 Mn 1.8 O 4 ceramics
Fig. 29.4 Scanning electron micrographs for micro- (a) and macro-modified (b)
Cu 0.4 Co 0.4 Ni 0.4 Mn 1.8 O 4 ceramics
Open pore size distributions for micro- and macro-modified Cu 0.4 Co 0.4 Ni 0.4
Mn 1.8 O 4 ceramics are shown in Fig. 29.5. Such distributions cover significant
amount of charge-transferring nanopores depending on sintering procedure and
small amount of communication mesopores [11, 20]. In contrast to humiditysensitive MgAl 2 O 4 ceramics, temperature-sensitive Cu 0.4 Co 0.4 Ni 0.4 Mn 1.8 O 4
ceramics practically do not possess outside-delivering macropores depending
on specific surface area of initial powder [5]. Thus, Cu 0.4 Co 0.4 Ni 0.4 Mn 1.8 O 4
ceramics prepared at 1100 ◦ C exhibit so-called one-modal pore size distribution
with maximum position near 2 nm and double-maximum near 2.3 and 5.5 nm for