High quality multiferroic BiFeO3 films prepared by pulsed laser deposition on glass substrates at reduced temperatures

Abstract

Oxygen vacancies induced switchable and nonswitchable photovoltaic effects in Ag/Bi0.9La0.1FeO3 /La0.7Sr0.3MnO3 sandwiched capacitors Appl. Phys. Lett. High quality multiferroic BiFeO3 films prepared by pulsed laser deposition on glass substrates at reduced temperatures

Photovoltaic Property of Multiferroic ${\hbox{BiFeO}}_3$ Films With Different Textures on Glass Substrates

“…Recently, significant photovoltaic (PV) effects originating from the narrower direct energy band gap of -eV, as compared to other ferroelectric perovskite oxides in BFO films under visible light illumination, have been observed [14]- [21]. The findings open additional probabilities in the design of the spintronic, optoelectronic, and magneto-optical devices [14]- [21].…”

“…The findings open additional probabilities in the design of the spintronic, optoelectronic, and magneto-optical devices [14]- [21]. The PV effect of BFO was suggested to dominate by photo-excited electrical carrier across bulk optical gap [15] due to the much larger short-circuit photocurrent under green Manuscript light than red light illumination and was also sensitive to the ferroelectric domain wall configuration [16], [17], oxygen vacancy concentration [14], and top electrodes [19], [20], etc.…”

“…On the other hand, of all single crystal oxide substrates which BFO films were grown on, the expensive cost of the substrates and very high formation temperature ( ) of perovskite phase close to 700 C lead to difficulties in practical production [5]- [11]. From previous studies, the introduction of a suitable underlayer like Pt or FePt can significantly reduce by about 200 C [11]- [13], [21]. Although BFO films grown on various substrates have been studied, reports on using a glass substrate, one of the most widely used substrate in industry, are still few.…”

Multiferroic properties of (Bi, Ca)FeO 3 films on glass substrates

“…Different from ceramics, ferroelectric properties are sensitive to the surface or interface structure of electrode [25][26][27][28][29][30][31][32]. In our previous studies, the refined metal bottom electrodes on glass substrates is helpful in lowering the formation temperature of perovskite phase of BFO and attaining flat dense microstructure and interface, which leads to good ferroelectric properties [25][26][27][28][29][30][31][32]. In this study, we report on Bi 1−x Ca x FeO 3 films with x = 0.05, 0.1, and 0.15 grown on refined metallic Pt(1 1 1) electrode layer buffered glass substrate by pulsed laser deposition (PLD) at reduced temperature of 450 • C. Structural, ferroelectric, and magnetic characterizations of BCFO films are presented.…”

Enhanced multiferroic and dielectric properties of Sr2+-doped BiFe0.94(Mn0.04Cr0.02)O3 thin films

“…The high electric breakdown field might be in favour of the switching of ferroelectric domains and the large leakage currents would overlay the domain switching current[23], revealing the well ferroelectric properties, but the poor P-E hysteresis loops. Moreover, the gradual phase transition from trigonal with R3c: H to tetragonal with P4 space group and the existence of [2Bi 0 Sr À V ÁÁ O ] x is also beneficial to enhance the ferroelectric properties of B 1-x Sr x FMC thin films.The room temperature magnetic hysteresis (M-H) loops for the BFO and B 1-x Sr x FMC (with x = 0.00, 0.05 and 0.09) thin films measured under a low magnetic field of 8 kOe are shown inFig.…”