scholarly journals Electrical Transport in Thick Film (Cermet) Resistors

1983 ◽  
Vol 10 (4) ◽  
pp. 285-293 ◽  
Author(s):  
Maria Prudenziati
Keyword(s):  
Electrical Properties ◽  
Thick Film ◽  
Electrical Transport ◽  
Research Groups ◽  
Conduction Mechanisms ◽  
Available Information

Though for many decades have we had thick-film resistors (TFRs) with good electrical properties, no well established model for describing their conduction mechanisms has been achieved. However the efforts of some research groups in U.S.A. and Europe in the last years have had success in improving our knowledge of the microstructure and of a large spectrum of electrical properties of TFRs. The available information narrows the field of possibilities for conduction mechanisms in TFRs. Though no conclusive assessment is yet possible, some lines for further progress can be precisely delineated.

Structural and electrical properties of KCa2Nb5O15 ceramics

Open Physics ◽  
2008 ◽  
Vol 6 (2) ◽  
Author(s):  
Banarji Behera ◽  
Pratibindhya Nayak ◽  
Ram Choudhary
Keyword(s):  
Electrical Properties ◽  
Temperature Variation ◽  
Electrical Transport ◽  
Room Temperature ◽  
Complex Impedance ◽  
Tungsten Bronze ◽  
Transport Processes ◽  
Relaxation Processes ◽  
Orthorhombic Crystal Structure ◽  
Grain Distribution

AbstractA polycrystalline sample of KCa2Nb5O15 with tungsten bronze structure was prepared by a mixed oxide method at high temperature. A preliminary structural analysis of the compound showed an orthorhombic crystal structure at room temperature. Surface morphology of the compound shows a uniform grain distribution throughout the surface of the sample. Studies of temperature variation on dielectric response at various frequencies show that the compound has a transition temperature well above the room temperature (i.e., 105°C), which was confirmed by the polarization measurement. Electrical properties of the material have been studied using a complex impedance spectroscopy (CIS) technique in a wide temperature (31–500°C) and frequency (102–106 Hz) range that showed only bulk contribution and non-Debye type relaxation processes in the material. The activation energy of the compound (calculated from both the loss and modulus spectrum) is same, and hence the relaxation process may be attributed to the same type of charge carriers. A possible ‘hopping’ mechanism for electrical transport processes in the system is evident from the modulus analysis. A plot of dc conductivity (bulk) with temperature variation demonstrates that the compound exhibits Arrhenius type of electrical conductivity.

Electrical properties of BaFe0.9Sn0.1O3–BaCoII0.02CoIII0.04Bi0.94O3 composite thick-film thermistors

Rare Metals ◽  
2014 ◽  
Vol 39 (11) ◽  
pp. 1321-1327
Author(s):  
Chang-Lai Yuan ◽  
Ying Luo ◽  
Qin Feng ◽  
Yun Yang ◽  
Xiu-Juan Zhou ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Thick Film

Structural and electrical properties of thick film thermistors based on perovskite La–Mn–Al–O

2014 ◽  
Vol 40 (7) ◽  
pp. 10505-10510 ◽  
Author(s):  
Xinqian Xiong ◽  
Jinbao Xu ◽  
Pengjun Zhao ◽  
Lei Wang ◽  
Liang Bian ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Thick Film ◽  
Structural And Electrical Properties

High-performance electrical properties of La-based perovskite ceramics for the functional phase of thick film resistors

2020 ◽  
Author(s):  
Yongcheng Lu ◽  
Yuanxun Li ◽  
Daming Chen ◽  
Rui Peng ◽  
Qinghui Yang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Electrical Properties ◽  
Thick Film ◽  
High Performance ◽  
Composite Ceramics ◽  
X Ray Diffraction ◽  
X Ray ◽  
Alternative Material ◽  
Perovskite Ceramics ◽  
Scanning Electron

Abstract In order to explore an economical functional phase alternative material for thick film resistors, the crystal structure, microstructure, and electrical properties of (1-x)LSCN + xLCNZ (x = 0.0–1.0) composite ceramics were studied through solid-state reaction experiments. The composite ceramics were characterized by x–ray diffraction, scanning electron microscopy, energy dispersive x–ray spectroscopy, and DC four–probe method. Results suggested that the main phases of LSCN and LCNZ were formed, along with a small part of impurity phases. The addition of LCNZ to LSCN decreased the electrical conductivity and changed the TCR from positive to negative. Zero TCR could be achieved around 0.6 < x < 0.8 and relatively low absolute TCR values could be obtained for the samples of 0.4 ≤ x ≤ 0.8. The ceramic of 0.6LSCN + 0.4LCNZ showed the optimal performances of conductivity = 1923 S/cm, TCR = 379.54 ppm/℃, and relative density = 95.05%.

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