A Study of the Hematite-Ilmenite Series by the Mössbauer Effect

Photoeffects at Semiconductor-Electrolyte Interfaces

“…oxides at low concentrations of Ti agree well with previously reported VFB.14,15,1 6 As the TI content increases, the VFB becomes more positive and at [11.4%1 Ti it is -0.43V. When the Ti concentra-* tion' is.…”

“…( 3 and-FeTiO 3 form a solid solution over the whole composition range. 6 As' a naturally occurring mineral, the hematite (iron oxidIe)-ilmenite (iron titanate) series are very important in paleomagnetic research because they exhibit highly stable magnetic properties which are dependent on composition and thermal history. 7 In many minerals, the electrical and optical properties that characterize these materials are'principally determined by intervalence charge transfer and crystal field transitions within and between cations of Fe and Ti.…”

Preparation and characterization of epitaxial Fe2−xTixO3 films with various Ti concentrations (0.5<x<1.0)

“…The broad components in the CEMS spectra were assigned to spin relaxation phenomena occurring because of thermally fluctuating electric and magnetic fields near the magnetic ordering temperature. 24 It was difficult to accurately analyze the CEMS spectra near the magnetic ordering temperature because of the broadening and overlapping of peaks in the spectra. Therefore, the spectra were simply deconvoluted to assume the maximum three components including the broad background component.…”

Moessbauer effect observations of the "X-phase" in the ilmenite-hematite series.

“…NEEL (1951) was the first to point out possible causes of self reversal. Since then, several authors, NAGATA and UYEDA (1959), VLASOV et al (1963), WESCOTT-LEWIS andPARRY (1971), andISHIKAWA andSYONO (1963), have concluded that the reverse TRM in the ilmenite-hematite solid solution series is caused by an exchange interaction between phases of slightly different compositions and therefore different Curie points. The most completely and satisfactorily developed theory is that of Ishikawa and Syono, whose main argument is reconstructed here.…”