α-Fe2O3 thin films prepared by metalorganic deposition (MOD) from Fe(III) 2-ethylhexanoate

Optical properties of iron oxide (α-Fe2O3) thin films deposited by the reactive evaporation of iron

“…In an earlier study, the refractive index was reported at a single spectral position [4]. It is worth mentioning that only in a few studies the obtained films were transparent, with transmittance exceeding 80% in the visible and near infrared ranges [3,4,10,12].…”

“…Therefore, it has been investigated as a potential candidate for many optical applications, such as solar energy conversion, electrochromism, photocatalysis, interference filters, and photo-oxidation of water [1][2][3][4]. Hematite thin films have been prepared by a variety of techniques, including sputtering [2,5], sol-gel-deposition [6,7], spray pyrolysis [3,8,9], metalorganic deposition [10], electrodeposition [11], and pulsed laser deposition [12]. One of the simplest techniques for the preparation of ␣-Fe 2 O 3 thin films is reactive evaporation, which requires no more than evaporation of pure iron in an oxygen atmosphere [4].…”

Ferrihydrite gels derived in the Fe(NO3)3·9H2O–C2H5OH–CH3CHCH2O ternary system

“…6(C)). Two strong well resolved vibration bands at 426 cm À1 and 518 cm À1 are assigned to the amorphous a-Fe-O bonds [24][25][26]. Simultaneously, the amplitude of the O-H band decreased.…”

“…6(F)). This band was assigned to the vibration of the crystalline Fe-O modes and was useful in monitoring the amorphous-to-crystalline phase transition of aFe 2 O 3 films derived from a metalorganic precursor [24]. So, the appearance of this peak (1078 cm À1 ) is direct evidence that gels derived in Ôchocolate brown phaseÕ area start amorphous-to-crystalline phase transformation of a-Fe 2 O 3 phase at temperature T = 700°C.…”

Structural and magnetic study of metallo-organic YIG powder using 2-ethylhexanoate carboxylate-based precursors

“…This study reveals that GAA improves YIG formation and decreases YIG crystallization temperature. [25,26]. The three exothermic peaks from 480 to 820 °C represent removal of the three 2-EH groups from the Y-2EH molecule to form Y 2 O 3 with total weight loss of 20.7% [27].…”