Abstract
We have investigated structure, magnetic and dielectric of La0.5Sr0.5Fe0.9Mn0.05Ti0.05O3 (LSFMTO) system using ultrasonic mixing method. LSFMTO system is driven by 40 kHz frequency and calcinate process up to 750°C for 30 minutes. Then sintering process also carried out by systematic various of temperature 900 °C, 1000 °C, and 1100 °C respectively, as same time previously. Very interestingly, the LSFMTO system exhibits ferroelectric (La,Sr)(Fe,Mn,Ti)O3 and ferromagnetic SrFe12019 properties and minor phase La2O3 by XRD interpretation analyzation. We have also carried out the measurement of LSFMTO system using a systematic applied the external magnetic field from 0 to 1 T and the electric polarization from 0 to 50 kV/m . The hysteresis curve of LSFMTO system shows the electricty coercive (Ec) increases while the saturation polarization (Pc) and the remanent polarization are tendency constant at the magnetic strength of 0.12 T. We believed that our finding of LSFMTO system is potensial to multiferroic material as magnetic sensor application.
Highlights
In recent years multiferroic composites have been a lot of interest in class of multi-functional materials which exhibit strong magnetoelectric (ME) [1–4]
We studied the different sintering temperature of La0.5Sr0.5Fe0.9Mn0.05Ti0.05O3 (LSFMTO) system that was prepared by solid state method
Powder X-ray diffraction (XRD) patterns were meansured by Phillips diffractometer using CoK radiation and with JEOL JSM 5310LV scanning electron microscope (SEM) observed the microstructures of LSFTMO
Summary
In recent years multiferroic composites have been a lot of interest in class of multi-functional materials which exhibit strong magnetoelectric (ME) [1–4]. The ME materials can couple with stimulating either by electric or magnetic fields [5–10]. Multiferroic composites in which ferroelectricity and ferromagnetism materials can result Magnetoelectric (ME) effect. (La,Sr)MnO3 or LSMO attracts a lot of attention because the manganites form a class of magnetic materials [16– 19]. We studied the different sintering temperature of La0.5Sr0.5Fe0.9Mn0.05Ti0.05O3 (LSFMTO) system that was prepared by solid state method. The preparation method affects the morphological, dielectric and magnetic properties of La0.5Sr0.5Fe0.9Mn0.05Ti0.05O3 (LSFMTO) system. We study the substitution of the Fe by Mn and Ti ions, and effect of the substitution of the Lanthanum by more Sr ions. We have investigated magnetic and electric coercive behavior of LSFMTO
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