Structural, dielectric and humidity properties of Al-Ni-Zn ferrite prepared by co-precipitation method

Kuru, Tuğba Şaşmaz; Kuru, Mehmet; Baǧcı, S.

doi:10.1016/j.jallcom.2018.04.255

Cited by 25 publications

(5 citation statements)

References 44 publications

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“…The essential reflection peaks were from the characteristic crystal planes of cubic single phase spinel structure (111), (220), (311), (222), (400), (422), (511), (440), (620) and (533). 14–16 It can be observed from Fig. 1 , the existence of extra peaks for x = 0.1 sample which refers to orthorhombic ferrite symmetry Pbnm as a second phase (NdFeO 3 ) symbolized by (*).…”

Section: Resultsmentioning

confidence: 92%

Influence of neodymium substitution on structural, magnetic and spectroscopic properties of Ni–Zn–Al nano-ferrites

et al. 2021

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Section: Resultsmentioning

confidence: 92%

Influence of neodymium substitution on structural, magnetic and spectroscopic properties of Ni–Zn–Al nano-ferrites

et al. 2021

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“…The decreasing impedance value with increasing relative humidity (RH) value can be explained by the adsorption mechanism of the water molecules. Also, there is an impedance dispersion at low frequencies, and it shows a shift towards higher frequencies with increasing ambient humidity values [32]. We can interpret that the investigated sample has a hydrophobic structure at a higher humidity than 70 % and up to 10 5 kHz frequency value that the impedance value almost stable in this humidity and frequency interval [33].…”

Section: Resultsmentioning

confidence: 55%

Co-Mg ferrite nanocomposite as a humidity sensor device prepared by Co-Precipitation method

Kuru

Eyüpoğlu

2018

Sakarya University Journal of Science

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In the present study, the humidity sensing properties of Co-Mg nanocomposite prepared by chemically coprecipitated have been investigated by impedance analysis. The correlation between the impedance patterns and relative humidity have shown remarkable results for further investigation. Whereas, the humidity measurement capability of the sensor was high at low frequencies. Also, we identified that this ability was continuously diminished at higher frequencies. So, the hysteresis value for successive adsorption and desorption of the humidity on ferrite nanocomposite material was also determined as small and also the long time measurement stability was excellent. The response and the recovery times for nanocomposite materials were identified as 60 s and 300 s respectively. Finally, a direct relationship between the active electron and transport mechanism of the humidity onto the nanocomposite has been identified as an advanced investigation.

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“…It is believed that the desorption process is generally slower than the adsorption process, resulting in a change in impedance slightly lower during the desorption than that in the adsorption. The conductivity mechanism of humidity sensors is studied via Complex Impedance Spectroscopy (CIS) [28]. The Nyquist complex impedance curves for Li1.1Co0.3Fe2.1O4 are estimated over a frequency ranging from 50Hz up to 5 MHz at various humidity levels from 40% up to 90% as shown in Fig.…”

Section: Humidity Sensing Studiesmentioning

confidence: 99%

Synthesis and Characterization of Non-Stoichiometric Li1.1Co0.3Fe2.1O4 Ferrite Nanoparticles For Humidity Applications

ElFarhatey

Ateia

Mosry³

et al. 2021

Preprint

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Humidity sensor plays a crucial role in determining the efficiency of materials and the precision of apparatuses. To measure and control humidity, a non-stoichiometric Li1.1Co0.3Fe2.1O4 mesopores sensor is synthesized by a modified citrate auto combustion technique. The XRD study confirms that prepared nanoparticles are cubic spinel structures having Fd3m space group. The crystallite size is approximate 36 nm. Thermal analyses measurements confirm that the samples become thermally stable starting from 600 °C. Additionally, the kinetic studies of the prepared samples are calculated via a pseudo-first-order kinetic model. The temperature dependence of AC conductivity is found to increase with increasing the temperature. These observations are explained in various models. The resistivity mechanism of humidity sensors is studied via Complex impedance spectroscopy (CIS). Its impedance data is fitting to a corresponding circuit, to achieve a simulation of the sample under study. This fitting is detected by the Nyquist plot (Cole-Cole). The obtained data confirms that the studied samples are very sensitive to humidity and can be commercially used as a humidity sensing element.

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Structural, dielectric and humidity properties of Al-Ni-Zn ferrite prepared by co-precipitation method

Cited by 25 publications

References 44 publications

Influence of neodymium substitution on structural, magnetic and spectroscopic properties of Ni–Zn–Al nano-ferrites

Influence of neodymium substitution on structural, magnetic and spectroscopic properties of Ni–Zn–Al nano-ferrites

Co-Mg ferrite nanocomposite as a humidity sensor device prepared by Co-Precipitation method

Synthesis and Characterization of Non-Stoichiometric Li1.1Co0.3Fe2.1O4 Ferrite Nanoparticles For Humidity Applications

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