01774nas a2200205   4500008004100000022001400041245012000055210006900175260010600244300001400350490000800364520094100372653002001313653002401333653001801357653003001375100001701405700002501422856012101447       2012                        eng d  a0038-109800aEnhanced magnetic parameters in the morphotropic phase boundary region of nanocrystalline multiferroic Bi1-xLaxFeO30 aEnhanced magnetic parameters in the morphotropic phase boundary   aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcAUG  a1609-16120 v1523 a<p>Antiferromagnetic multiferroic BiFeO3 shows ferromagnetic characteristics by simultaneous substitution of Bi by La and decrease in the particle size to nanometer dimensions. Large changes in saturation and remnant magnetization, magnetic susceptibility at low and high fields, along with some anomalous changes in the magnetic transition temperature are observed in nanocrystalline Bi1-xLaxFeO3 system for 0.1 &lt;= x &lt;= 0.2. This compositional region corresponds to the morphotropic phase boundary (MPB) region separating the rhombohedral and orthorhombic phases, and the effect is similar to that observed in many ferroelectric systems. The present observation of enhanced ferromagnetic parameters in the MPB region of the nanocrystalline multiferroic La substituted BiFeO3 system, combined with the known ferroelectric characteristics, is suitable for future device applications. (C) 2012 Elsevier Ltd. All rights reserved.</p>10aBismuth ferrite10amagnetic properties10aMultiferroics10aNanocrystalline materials1 aThakuria, P.1 aJoy, Pattayil, Alias  uhttps://library.ncl.res.in/content/enhanced-magnetic-parameters-morphotropic-phase-boundary-region-nanocrystalline-002439nas a2200289   4500008004100000022001400041245015200055210006900207260000800276300001400284490000700298520144800305653001901753653002001772653002201792653002701814100002301841700001701864700002201881700001701903700002201920700002101942700001801963700001701981700002401998856012702022       2023                        eng d  a0272-884200aPd loaded bismuth ferrite: a versatile perovskite for dual applications as acetone gas sensor and photocatalytic dye degradation of malachite green0 aPd loaded bismuth ferrite a versatile perovskite for dual applic  cFEB  a5738-57470 v493 a<p>Herein we report the palladium loaded bismuth ferrite for its bidirectional application as acetone gas sensor and photocatalytic dye degradation of malachite green. The motivation for loading Pd on bismuth ferrite (BFO) is due to its fascinating catalytic redox reactions causing faster adsorption and desorption of the oxygen molecules over the metal oxide. The planned perovskites were developed via surfactant assisted sol-gel auto-combustion route, and characterized their physico-chemical properties using XRD, SEM, TEM, HRTEM, EDAX, XPS and BET. The developed BFO showed the best selectivity towards acetone, whose response was 69% at 300 degrees C operating temperature for 500 ppm gas concentration. By tuning the surface area and catalytic behavior using CTAB and Pd loading, respectively, the enhancement in the gas response properties of BFO was achieved to 95% with the response and recovery time of 75 s and 104 s. The 1 wt% Pd loaded BFO showed the highest response (95%) in comparison to rest of the Pd loadings (0.5, 1.5 and 2.0 wt%). Moreover, the sunlight driven photocatalytic dye degradation of malachite green is carried out at 1 h exposure time. Here as well, 1 wt% Pd loaded BFO exhibited the maximum dye degradation efficiency of 51%. The results of this study demonstrate the developed perovskites have a significant potential for the use in dual applications such as acetone gas sensor and MG photocatalysis.</p>
10aAcetone sensor10aBismuth ferrite10aPalladium loading10aPhoto dye -degradation1 aGhadage, Pandurang1 aKodam, Pavan1 aNadargi, Digambar1 aPatil, Suraj1 aTamboli, Mohaseen1 aBhandari, Nagesh1 aMulla, Imtiaz1 aPark, Chinho1 aSuryavanshi, Sharad  uhttps://library.ncl.res.in/content/pd-loaded-bismuth-ferrite-versatile-perovskite-dual-applications-acetone-gas-sensor-and