Advances in nanomagnetism via X-ray techniques

A cobalt-free electrode material La0.5Sr0.5Fe0.8Cu0.2O3−δ for symmetrical solid oxide fuel cells

“…La 1-x Sr x Fe 1-y Cu y O 3-δ (LSFC x/y ) perovskite oxides are affordable cobalt-free perovskite oxides with excellent cathode performance for SOFCs [19], and copper-iron containing perovskite oxides have been reported to show catalytic activity for oxidation reactions of CO or methane [20,21].…”

Exchange anisotropy, engineered coercivity and spintronics in atomically engineered L1₀ heterostructures

“…In the case of the metal/oxide heterostructures, the domain structure of the metal is carefully modulated by that of the underlying oxide, opening the possibility of carrying out novel experiments to study spin-dependent domain-wall scattering and quantify domain wall resistance in mesoscopic geometries. Utilizing state-of-the-art characterization methods, using synchrotron radiation [25] and electron holography [26,27], we addressed the critical role of all aspects of the microstructure, at relevant length scales, in determining these specific magnetic properties. Two significant highlights of this project were the use of photoemission electron microscopy (PEEM) work to elucidate their asymmetric magnetization reversal mechanism [10] and the use of element-specific X-ray magnetic reflectivity and x-ray resonant scattering to probe buried interfaces [13], both of importance in understanding the fundamental physics of exchange bias.…”

Синтез Кластеров Оксидов Железа В Мезопорах Монодисперсных Сферических Частиц Кремнезема

“…Намагниченность и магнитная анизотропия наноразмерных однодоменных частиц мо-гут быть заметно больше, чем у массивного материала, а отличия в температурах Кюри и Нееля достигают сотен процентов. У магнитных наночастиц обнаружены высо-кие значения обменного взаимодействия и аномально большой магнитокалорический эффект [6,7].…”