Magnetic structure of layered LiFe1−xCoxO2: a powder-neutron diffraction study

Spin-dependent Optical Excitations in LiFeO2

“…As a result, the net magnetic moments are expected to be sensitive to change during Li + transportation . The ferromagnetic configuration, the magnetic moment of the Fe 3+ ion, and the net magnetic moment of LiFeO 2 have been confirmed in previous neutron diffraction and first-principles calculations. , …”

“…The lithium ferrite compound (LiFeO 2 ) has been extensively studied for its versatile properties and practical applications. Indeed, LiFeO 2 is a non-toxic compound, which exhibits a rapid lithium transportation, a very strong reaction with CO 2 molecules, , magneto-electronic effects, − and high photo-catalysis performances . These features make it attractive in technological applications, such as lithium batteries, catalysis, CO 2 absorbers, and spin-electronic technology.…”

“…Most first-principles studies also do not propose the optical mechanism, for example, the close connections between the electronic, magnetic, and optical properties. (iii) The magnetic properties of LiFeO 2 have been frequently studied experimentally, for example, the magnetization of layered LiFeO 2 was measured using a SQUID magnetometer and neutron diffractions. ,, However, to the best of our knowledge, magnetic first-principles calculations for this compound are rather limited. , …”

Effect of iron on delithiation in LixCo1−yFeyO2. Part 1: in-situ electrochemical and X-ray diffraction study

“…10 Previous structural studies clearly showed that the a-NaFeO 2 -structure is maintained throughout the whole composition range. [4][5][6][7][10][11][12][13][14][15][16] a-NaFeO 2 -type LiFeO 2 and Fe-rich LiCo 12y Fe y O 2 are known not to be electrochemically active. 11,17,18 The reason for this is not known, as other LiFeO 2 -modifications that are electrochemically active have been reported.…”

Effect of iron on delithiation in LixCo1−yFeyO2. Part 2:in-situ XANES and EXAFS upon electrochemical cycling

“…LiCo 12y Fe y O 2 could be an interesting alternative in this respect, if the stabilising effect of cobalt was maintained and indeed numerous works have been devoted to investigate this system. The synthesis and the structural and physicochemical characterisation of these compounds have already been discussed [15][16][17][18][19][20][21][22][23][24][25][26] in the first part of this series, 27 where the in-situ X-ray diffraction study of the LiCo 12y Fe y O 2 solid solution is described. Upon oxidation of Fe 31 , Fe 41 should be formed, which is a d 4 -high spin system, showing, in principle, a Jahn-Teller effect, i.e.…”