Valence-band spectra and electronic structure ofCuFeO2

Comparative study of the structural and optical properties of epitaxial CuFeO2 and CuFe1−xGaxO2 delafossite thin films grown by pulsed laser deposition methods

“…Again, agreement may be established with [14,15] and the expected direct energy gaps cited in Refs. [11] and [31]. Inspection of the Tauc-plot for indirect transitions (not shown) revealed a strong singular absorption edge initiated at 1.0eV which was again in agreement with [13][14][15].…”

“…There are reports of multiple dominant absorption edges forming step like patterns in the optical spectra of delafossite CuFeO 2, which are thought to emerge from the super-positioning of CuO 2 and Fe 2 O 3 absorbance properties within the composite delafossite CuFeO 2 [11]. Additionally, the breaking of dipole forbidden transition mechanisms is thought to emerge from Fe-3d states positioned within the forbidden regions of the crystalline structure [12].…”

Electromagnetic properties and electronic structure of the iron-based layered superconductor LaFePO

“…[43] and Fe-P inter-metallic compounds (FeP [44] and LaFe 4 P 12 [45]). On the other hand, it is distinctly different from those of FeO [46] and FeS 2 [35], suggesting that the Fe-P chemical bond in LaOFeP has less of an ionic nature and is more likely to be metallic or covalent. is employed to remove the backgrounds, and their intensities are normalized with the most intense band D around 17 eV, which is assigned to La 5p 3/2 and 5p 1/2 , as discussed later.…”

The Structural and Magnetic Properties of CuRh1−x Mn x O2 (0 ≤ x ≤ 0.1) Delafossite Oxide

“…It has lattice parameters a = 3.0824Å and c = 17.0943Å [10]. It consists of a triangular lattice of Rh 3+ ions (S = 0, L = 0) separated by nonmagnetic ionic layers of O 2− , Cu + , and O 2− , stacked along the c axis in the hexagonal description [11]. Among other magnetic delafossite, crednerite CuMnO 2 is an ABO 2 -type triangular-lattice antiferromagnet that has Bsite cations of Mn 3+ (3d 4 : t 3 2g e 1 g ), the crystal structure of CuMnO 2 does not consist of perfect triangular lattices [12], and rather, it consists of isosceles-triangular lattices due to Jahn-Teller distortion of Mn 3+ (3d 4 : t 3 2g e 1 g ) with an orbital degree of freedom.…”