Liquid flow deposited spinel (Ni,Mn)3O4 thin films for microbolometer applications

Characterization of Cu-doped (Ni,Mn)3O4 thin films annealed at low temperatures

“…Among several routes proposed for the synthesis of nickel-manganite thin films at low temperatures, the liquid flow deposition (LFD) has been known as solution-based process, taking the advantages of nonvacuum, low-energy consumption, environmental friendliness, cost effectiveness and the capability of using various types of substrates [18]. In the previous publication [19], we demonstrated the synthesis of tetragonal nickel-manganite spinels by LFD from Ni 2+ and Mn 2+ cations with a chloride solution. This technique was then extended for fabricating (Ni,Co,Mn) 3 O 4 cubic spinel-type oxide, yielding highly conductive thin films at a modest annealing temperature of 400° C [20].…”

Solution Synthesis of Cubic Spinel Mn–Ni–Cu–O Thermistor Powder

“…The preparation method used in this work is similar to the LFD technique used for the synthesis of Mn 3 O 4 -based thin films [ 27 , 28 , 29 ]. The difference between the two methods is that LFD thin films are formed via heterogeneous (ion-by-ion) nucleation, while the powders prepared in this study are formed in solution by a homogenous (cluster-by-cluster) process.…”

“…We considered that if stable cubic spinel symmetry can be achieved at a relatively low temperature, particle growth at high temperatures can be significantly suppressed, and thus, smaller particles can be obtained. In our previous work [ 27 ], we synthesized hausmannite (Mn 3 O 4 ) thin films from chloride solutions by liquid flow deposition (LFD). We then prepared thin films of (Ni, Cu, Mn) 3 O 4 [ 28 ] cubic spinel-type oxides with excellent electrical properties by the same method.…”

Electrical properties and aging behavior of nickel manganite thin films co-doped with Cu and Zn annealed at low temperature

“…3a and b, all lms are well-crystallized after heat treatment in air at 400 °C. The high crystallization of the LFD nickel manganite-based thin lms after annealing at a moderate temperature has been discussed elsewhere [16,17]. A tetragonal spinel structure is revealed for lms without Cu (x = 0.000), regardless of the presence of Zn in their compositions.…”

“…Thin lms are prepared using various methods, among which chemical solution processes have attracted considerable attention because of their low cost, simplicity, and large area coverage. Among them, liquid ow deposition (LFD), which typically provides the advantages of low processing temperatures and environmental friendliness, offers great potential for synthesizing crystallized nickel-manganite-based thin lms [16]. Particularly, by exploiting the Mn 2+ → Mn 3+ oxidation, high-quality NTCR (Co,Ni,Mn) 3 O 4 thin lms have been successfully fabricated via the LFD route, as described in our previous work [17].…”