Abstract
This paper presents the results of the heating of magnetic fluid (MF) containing magnetite nanoparticles. Volume concentration of magnetite nanoparticles (ϕV = 2.76%) was determined from magnetic experiments. Mean diameter 〈d〉 = 12.7 nm and its standard deviation s = 5.0 nm of the core of magnetic particles were obtained using TEM technique. Magnetic fluid heating experiments were carried out at a frequency of 440 kHz for magnetic field strength up to 3 kA⋅m−1 using lab-made experimental set-up. For temperature measurements, various kinds of devices were used: pyrometer, thermocouple thermometer, optical fiber temperature sensor and thermometer with ultrasonic sensor. Specific absorption rate (SAR) and temperature measurement error were calculated and discussed for all the thermometers used. The influence of eddy currents induced in a thermocouple on the determination of temperature of MF was described. The usefulness of different types of temperature measuring devices and their accuracy in determining the heating rate and the SAR coefficient of the magnetic fluid were analyzed and discussed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
