NDLI: Magnetic Properties of Phospho-Olivine Li(Fe<formula formulatype=inline><tex Notation=TeX>$_{1-x}$</tex></formula>Mn<formula formulatype=inline><tex Notation=TeX>$_{x}$</tex></formula>)PO<formula formulatype=inline><tex Notation=TeX>$_{4}$</tex></formula> <newline/>Investigated With Mössbauer Spectroscopy

Content Provider	IEEE Xplore Digital Library
Author	In Kyu Lee Sam Jin Kim Chul Sung Kim
Copyright Year	1965
Abstract	The crystalline structure of the Li(Fe_1-xMn_x)PO₄ (x = 0.0, 0.2) samples was determined to be olivine-type orthorhombic with Pnma space group. The contraction ofunit cell volume from LiFe_0.8Mn_0.2PO₄ (V = 293.296 Å³) to LiFePO₄ (V = 291.445 Å³) can be explained by the different ionic radii of high-spin Fe²⁺ and Mn²⁺. The temperature-dependent magnetic susceptibility and Curie-Weiss fitted reciprocal susceptibility curves of Li(Fe_1-xMn_x)PO₄ indicates that there are antiferromagnetic ordering with different values of magnetic Neel temperature and effective moment between LiFe_0.8Mn_0.2PO₄ (T_N = 49 K, μ_eff = 5.66μ_B) and LiFePO₄ (T_N = 51 K, μ_eff = 5.37 μ_B). From the Mossbauer analysis, The distribution of the Mn²⁺ (3d₅) ions in M₂ magnetic sites can lead to the reduction of magnetic hyperfine field (H_hf) of LiFe_0.8Mn_0.2PO₄ in Fe²⁺ (3d₆) sites. Also, the isomer shift (δ) and electric quadrupole splitting (ΔE_Q) values, increasing with Mn²⁺ substitution, can be attributed to the decrease of charge density at Fe nucleus ρ_A (0) due to the 3d-electron penetrating closer to the Fe nucleus with asymmetric charge distribution by the presence of Mn²⁺ ions on the FeO₆ octahedral sites.
Sponsorship	IEEE Magnetics Society
Starting Page	1553
Ending Page	1555
Page Count	3
File Size	435852
File Format	PDF
ISSN	00189464
Volume Number	48
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Manganese Magnetic susceptibility Iron Ions Magnetic properties Batteries Lithium olivine Antiferromagnetism lithium-ion battery Mössbauer spectroscopy
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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