Electrical Characterisation of Ni0.5Co0.3Cr0.2Mn2O4 Thermistors

Berat Yüksel Price

doi:https://doi.org/10.18466/cbayarfbe.308508

Article Details

Electrical Characterisation of Ni0.5Co0.3Cr0.2Mn2O4 Thermistors

Authors:

Berat Yüksel Price

Publisher:

Celal Bayar University

Main Topics:

Applied physics

Journal:

Celal Bayar University Journal of Science 2017 Vol.13 Issue 2, pp.401-405

Document Type:

Article

Publication Date:

5/2017

Document Language:

Turkish

Document ID (Org No.):

2000706541

Frequency:

Quarterly

eISSN:

1305-1385

pISSN:

1305-130X

DOI:

https://doi.org/10.18466/cbayarfbe.308508

Abstract:

 



Negative
temperature coefficient (NTC) thermistors are ceramic semiconductors derived
from metal oxides such as Mn, Ni, Co, Cu, Cr, Fe etc. The electrical resistance
of NTC thermistors decrease with increasing temperature. In industrial
applications, the desired material constant (B) of NTC thermistors is in the
range of 2000 to 5000 K and the sensitivity coefficient (α) is in the range of
(-2.2) to (-5.5) %/K. The electrical properties of NTC thermistors can be
changed significantly by the type and molar ratio of metal oxide additions as
well as the selected process parameters during manufacturing of samples. In this study, the
effect of Cr2O3 addition on the electrical properties of Mn-Ni-Co-O
NTC
thermistors sintered at 1100 oC for 5 hours was investigated. The
electrical resistance was measured in a temperature programmable furnace
between 25 and 85oC in steps of 0.1oC. The material
constant “B”, the activation energy “Ea” and the sensitivity
coefficient “α” values were calculated. The aging behaviour of Mn–Ni–Co–Cr-O NTC
ceramics was also investigated by electrical resistivity measurement after
accelerated aging.

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Article Details

Electrical Characterisation of Ni0.5Co0.3Cr0.2Mn2O4 Thermistors

Authors: Berat Yüksel Price

Publisher: Celal Bayar University

Main Topics: Applied physics

Journal: Celal Bayar University Journal of Science 2017 Vol.13 Issue 2, pp.401-405

Document Type: Article

Publication Date: 5/2017

Document Language: Turkish

Document ID (Org No.): 2000706541

Frequency: Quarterly

eISSN: 1305-1385

pISSN: 1305-130X

DOI: https://doi.org/10.18466/cbayarfbe.308508

Issues

Authors:

Berat Yüksel Price

Publisher:

Celal Bayar University

Main Topics:

Applied physics

Journal:

Celal Bayar University Journal of Science 2017 Vol.13 Issue 2, pp.401-405

Document Type:

Article

Publication Date:

5/2017

Document Language:

Turkish

Document ID (Org No.):

2000706541

Frequency:

Quarterly

eISSN:

1305-1385

pISSN:

1305-130X

DOI:

https://doi.org/10.18466/cbayarfbe.308508