Formation of Mn-Co-Ni-O Nanoceramic Microspheres Using In Situ Ink-Jet Printing: Sintering Process Effect on the Microstructure and Electrical Properties.
Mn-Co-Ni-O nanoceramic microspheres with high density, uniformity, and size tunability are successfully fabricated using in situ ink-jet printing and two step sintering (TSS) techniques. The microspheres, synthesized by an effective and facile reverse microemulsion method, consist of uncalcined Mn-Co-Ni-O nanocrystallines that show a well formed single tetragonal spinel phase and an average particle size distribution of ≈20 nm. The sintering behavior, microstructure, and electrical properties of the Mn-Co-Ni-O nanoceramic microspheres are systematically investigated and characterized. The results indicate that the sintered Mn-Co-Ni-O nanoceramic microspheres show high density and improved electrical properties. The highest R25, B25/50, Ea, and α25values achieved at sintering temperature of 1150 °C are 4846.7 KΩ, 4320 K, 0.401 eV, and -5.24% K-1, respectively for these Mn-Co-Ni-O nanoceramic microspheres. Furthermore, the formation mechanism of uncalcined Mn-Co-Ni-O nanocrystallines and an analysis of the TSS procedure of the nanoceramic microspheres are discussed.
Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, Suzhou, 215123, China.|Key Laboratory of Functional Materials and Devices for Special Environments of CAS, Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics and Chemistry of Chinese Academy of Science, 40-1 South Beijing Road, Urumqi, 830011, China.|University of Chinese Academy of Sciences, 19 A Yuquan Rd, Beijing, 100049, China.
Long
L
Chen
Key Laboratory of Functional Materials and Devices for Special Environments of CAS, Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics and Chemistry of Chinese Academy of Science, 40-1 South Beijing Road, Urumqi, 830011, China.|Department of Physics, Changji University, Changji, 831100, China.
Qinan
Q
Zhang
Key Laboratory of Functional Materials and Devices for Special Environments of CAS, Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics and Chemistry of Chinese Academy of Science, 40-1 South Beijing Road, Urumqi, 830011, China.
Jincheng
J
Yao
Key Laboratory of Functional Materials and Devices for Special Environments of CAS, Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics and Chemistry of Chinese Academy of Science, 40-1 South Beijing Road, Urumqi, 830011, China.
Junhua
J
Wang
Key Laboratory of Functional Materials and Devices for Special Environments of CAS, Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics and Chemistry of Chinese Academy of Science, 40-1 South Beijing Road, Urumqi, 830011, China.
Wenwen
W
Kong
Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, Suzhou, 215123, China. cpjiang2008@sinano.ac.cn.|Key Laboratory of Functional Materials and Devices for Special Environments of CAS, Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics and Chemistry of Chinese Academy of Science, 40-1 South Beijing Road, Urumqi, 830011, China. cpjiang2008@sinano.ac.cn.
Chunping
C
Jiang
Key Laboratory of Functional Materials and Devices for Special Environments of CAS, Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics and Chemistry of Chinese Academy of Science, 40-1 South Beijing Road, Urumqi, 830011, China. changam@ms.xjb.ac.cn.
Aimin
A
Chang
Mn-Co-Ni-O ceramics; ink-jet printing; reverse microemulsion method; two-step sintering, microspheres