Effect of temperature and humidity on dielectric and impedance properties of K(Nb0.8Ta0.2)0.99Mn0.01O3 electroceramics
We report the effect of humidity and temperature on the dielectric and impedance properties of lead-free potassium tantalum niobium oxide (KTN). It illustrates large dielectric constant ∼4500 at 1 kHz, low tangent loss in dry condition, which drastically changes under humidity condition. The nature...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2020-01-01
|
| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ab8587 |
| _version_ | 1797746433879703552 |
|---|---|
| author | Ravikant Sheshamani Singh V N Ojha Ashok Kumar |
| author_facet | Ravikant Sheshamani Singh V N Ojha Ashok Kumar |
| author_sort | Ravikant |
| collection | DOAJ |
| description | We report the effect of humidity and temperature on the dielectric and impedance properties of lead-free potassium tantalum niobium oxide (KTN). It illustrates large dielectric constant ∼4500 at 1 kHz, low tangent loss in dry condition, which drastically changes under humidity condition. The nature and magnitude of dielectric constant and tangent loss were moderately different in both heating and cooling conditions. A series of phase transitions from rhombohedral to orthorhombic (below room temperature), and orthorhombic to tetragonal (∼185 °C) and tetragonal to Cubic (390 °C) have been obtained respectively over a wide range of temperature with a significant change in magnitude and nature in transition temperature during cooling mode. A detail transport properties have been carried out based on Impedance spectra, Modulus spectra, Nyquist Plot, and ac conductivity to establish a microstructure-property relation. The activation energy of the charge carriers determined that mainly electronic charge carriers contribute to transport properties in the low-temperature range while oxygen vacancies and cations near the high-temperature ferroelectric phase transition. The effect of moisture on room temperature capacitance, tangent loss, and impedance have been discussed. |
| first_indexed | 2024-03-12T15:37:45Z |
| format | Article |
| id | doaj.art-d7f6da0cc80d458fa3ed4406785fb213 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:37:45Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-d7f6da0cc80d458fa3ed4406785fb2132023-08-09T16:10:44ZengIOP PublishingMaterials Research Express2053-15912020-01-017404630210.1088/2053-1591/ab8587Effect of temperature and humidity on dielectric and impedance properties of K(Nb0.8Ta0.2)0.99Mn0.01O3 electroceramicsRavikant0https://orcid.org/0000-0002-1480-2560Sheshamani Singh1V N Ojha2Ashok Kumar3CSIR-National Physical Laboratory, Dr K. S. Krishnan Marg, New Delhi 110012, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-National Physical Laboratory (CSIR-NPL) Campus, Dr K. S. Krishnan Road, New Delhi 110012, India; Department of Physics, Govt college Sailana, Vikram University , Ujjain, IndiaCSIR-National Physical Laboratory, Dr K. S. Krishnan Marg, New Delhi 110012, India; Department of Physics, Amity School of Applied Sciences (ASAS), Amity University Rajasthan , NH-11C, Jaipur- Delhi National Highway, RIICO Industrial Area, Kant Kalwar, Jaipur (Rajasthan), 302006, IndiaCSIR-National Physical Laboratory, Dr K. S. Krishnan Marg, New Delhi 110012, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-National Physical Laboratory (CSIR-NPL) Campus, Dr K. S. Krishnan Road, New Delhi 110012, IndiaCSIR-National Physical Laboratory, Dr K. S. Krishnan Marg, New Delhi 110012, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-National Physical Laboratory (CSIR-NPL) Campus, Dr K. S. Krishnan Road, New Delhi 110012, IndiaWe report the effect of humidity and temperature on the dielectric and impedance properties of lead-free potassium tantalum niobium oxide (KTN). It illustrates large dielectric constant ∼4500 at 1 kHz, low tangent loss in dry condition, which drastically changes under humidity condition. The nature and magnitude of dielectric constant and tangent loss were moderately different in both heating and cooling conditions. A series of phase transitions from rhombohedral to orthorhombic (below room temperature), and orthorhombic to tetragonal (∼185 °C) and tetragonal to Cubic (390 °C) have been obtained respectively over a wide range of temperature with a significant change in magnitude and nature in transition temperature during cooling mode. A detail transport properties have been carried out based on Impedance spectra, Modulus spectra, Nyquist Plot, and ac conductivity to establish a microstructure-property relation. The activation energy of the charge carriers determined that mainly electronic charge carriers contribute to transport properties in the low-temperature range while oxygen vacancies and cations near the high-temperature ferroelectric phase transition. The effect of moisture on room temperature capacitance, tangent loss, and impedance have been discussed.https://doi.org/10.1088/2053-1591/ab8587ferroelectricsimpedanceferroelectric phase transition (FPT)complex impedancespectroscopy (CIS)polarization |
| spellingShingle | Ravikant Sheshamani Singh V N Ojha Ashok Kumar Effect of temperature and humidity on dielectric and impedance properties of K(Nb0.8Ta0.2)0.99Mn0.01O3 electroceramics Materials Research Express ferroelectrics impedance ferroelectric phase transition (FPT) complex impedance spectroscopy (CIS) polarization |
| title | Effect of temperature and humidity on dielectric and impedance properties of K(Nb0.8Ta0.2)0.99Mn0.01O3 electroceramics |
| title_full | Effect of temperature and humidity on dielectric and impedance properties of K(Nb0.8Ta0.2)0.99Mn0.01O3 electroceramics |
| title_fullStr | Effect of temperature and humidity on dielectric and impedance properties of K(Nb0.8Ta0.2)0.99Mn0.01O3 electroceramics |
| title_full_unstemmed | Effect of temperature and humidity on dielectric and impedance properties of K(Nb0.8Ta0.2)0.99Mn0.01O3 electroceramics |
| title_short | Effect of temperature and humidity on dielectric and impedance properties of K(Nb0.8Ta0.2)0.99Mn0.01O3 electroceramics |
| title_sort | effect of temperature and humidity on dielectric and impedance properties of k nb0 8ta0 2 0 99mn0 01o3 electroceramics |
| topic | ferroelectrics impedance ferroelectric phase transition (FPT) complex impedance spectroscopy (CIS) polarization |
| url | https://doi.org/10.1088/2053-1591/ab8587 |
| work_keys_str_mv | AT ravikant effectoftemperatureandhumidityondielectricandimpedancepropertiesofknb08ta02099mn001o3electroceramics AT sheshamanisingh effectoftemperatureandhumidityondielectricandimpedancepropertiesofknb08ta02099mn001o3electroceramics AT vnojha effectoftemperatureandhumidityondielectricandimpedancepropertiesofknb08ta02099mn001o3electroceramics AT ashokkumar effectoftemperatureandhumidityondielectricandimpedancepropertiesofknb08ta02099mn001o3electroceramics |