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Condens. Matter 2022, 7, 4 3 of 7 the magnetic Compton profile Jmag(pz) is directly related to wavefunctions of the magnetic electrons and the spin-resolved electronic structure of the magnetic materials. Figure 1. A schematic of the experimental magnetic Compton scattering setup at BL08W of SPring-8. 3. Results and Discussions Figure 2 shows the spin magnetic moments and the total magnetic moments of LTMO (x = 0, 0.4, 0.8 and 1.2) obtained via the magnetic Compton scattering technique and SQUID magnetometry. The yellow and blue background colors separate the cationic and the anionic redox regions, respectively [1]. The cationic redox reaction dominates over the lithium concentration range 0 < x < 0.4, while the anionic redox dominates for 0.4 < x < 1.2 [17]. The total magnetic moments obtained from SQUID magnetometry are extracted from the magnetization corresponding to a magnetic field of 2.5 T. These results can be compared to the spin magnetic moment extracted from the magnetic Compton profile using the sum rule: ∞ −∞ These spin magnetic moments obtained from Compton profiles reproduce the total magnetic moments obtained from SQUID measurements well. A slight difference between the spin magnetic moments and the total magnetic moments comes from the orbital con- tribution to the total moments. The magnetic moments in Figure 2 are seen to increase with Li concentration in the cationic regime, which is also found to be the case in spinel cathode materials [6]. Interestingly, the magnetic moment decreases with the addition of Li in the anionic regime. The crossover between these two distinct trends occurs around x=0.4. Thiscanberationalizedasfollows.AtalowLiconcentration(0PDF Image | Magnetic Compton Scattering Study of Li-Rich Battery Materials
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