Magnetic properties of Zn-Sn-substituted Ba-ferrite powders prepared by ball milling

Mendoza-Suárez, G.; Johal, K.K; Mancha-Molinar, H.; Escalante-Garcı́a, J.I.; Cisneros-Guerrero, M.M

doi:10.1016/s0025-5408(01)00751-6

Cited by 28 publications

(6 citation statements)

References 11 publications

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“…Li [2,3], Ni [4], Mn [5], Zn [6], and Ba [7,8] The resultants of the self-propagating combustion of barium ferrite precursor gel are BaCO 3 and ␥-Fe 2 O 3 . The phase structure of Fe 2 O 3 is important for the preparation of barium ferrite.…”

Section: Introductionmentioning

confidence: 99%

Crystal structure and magnetic properties of barium ferrite synthesized using GSPC and HEBM

Qiu

2006

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Crystal structure and magnetic properties of barium ferrite synthesized using GSPC and HEBM

Qiu

2006

Journal of Alloys and Compounds

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“…High magnetic polarisation J and adequately low coercivity H c is required for these materials. The magnetic properties of the final product are strongly dependent on the conditions of synthesis [2]. In our case H c was controlled through the substitution of Fe 3+ ions by the pair of the divalent and the tetra-valent ions.…”

Section: Introductionmentioning

confidence: 91%

Magneto-crystalline properties of BaFe12−2x M x Sn x O19 (M = Sn, Ni, Zn) ferrite powders

et al. 2006

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BaFe 12−2x M x Sn x O 19 compounds, where M=Sn 2+ , Ni 2+ or Zn 2+ ions, were synthesized by mechanical milling and partially by citrate precursor methods. Analysis of magneto-crystalline structure has been carried out by Mössbauer spectroscopy. The Sn 4+ ions replace Fe 3+ ions on 2b and slightly on 2a+4f 1 sites, Zn 2+ ions strongly prefer 4f 1 sites, Sn 2+ ions prefer 4f 1 sites too and Ni 2+ ions occupy 4f 2 and 12k or 2a sites. The magnetic properties were evaluated by the vibrating sample magnetometry and the thermomagnetic analysis. A large variation of the intrinsic coercivity H c (330 to 78 kA/m) and of temperature coefficient of coercivity of ΔH c /Δϑ (0.39 to 0.22 kA/m°C) were achieved as a function of the (Zn-Sn) and (Sn-Sn) substitutions, respectively. The Curie temperature T c decreased with the (Ni-Sn) substitution from 447 to 399°C.

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“…The substitution of Fe by the trivalent metals such as Al, Ga, and Cr leads to an increase in coercivity and magnetocrystalline anisotropy (MAE) with reduction in magne- * Corresponding author: sk162@msstate.edu tization [12]. In particular, the substitution of divalenttetravalent pairs such as Zn-Nb [15], Zn-Sn [16][17][18][19], and Sn-Mg [2] result in significant enhancement in saturation magnetization with rapid reduction in coercivity.…”

Section: Introductionmentioning

confidence: 99%

Site preference and magnetic properties of Zn-Sn-substituted strontium hexaferrite

Dixit

Thapa

Lamichhane

et al. 2019

Journal of Applied Physics

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The site preference and magnetic properties of Zn, Sn and Zn-Sn substituted M-type strontium hexaferrite (SrFe12O19) have been investigated using first-principles total energy calculations based on density functional theory. The site occupancy of substituted atoms were estimated by calculating the substitution energies of different configurations. The distribution of different configurations during the annealing process at high temperature was determined using the formation probabilities of configurations to calculate magnetic properties of substituted strontium hexaferrite. We found that the magnetization and magnetocrystalline anisotropy are closely related to the distributions of Zn-Sn ions on the five Fe sites. Our calculation show that in SrFe11.5Zn0.5O19, Zn atoms prefer to occupy 4f1, 12k, and 2a sites with occupation probability of 78%, 19% and 3%, respectively, while in SrFe11.5SnO19, Sn atoms occupy the 12k and 4f2 sites with occupation probability of 54% and 46%, respectively. We also found that in SrFe11Zn0.5Sn0.5O19, (Zn,Sn) atom pairs prefer to occupy the (4f1, 4f2), (4f1, 12k) and (12k, 12k) sites with occupation probability of 82%, 8% and 6%, respectively. Our calculation shows that the increase of magnetization and the reduction of magnetic anisotropy in Zn-Sn substituted M-type strontium hexaferrite as observed experimentally is due to the occupation of (Zn,Sn) pairs at the (4f1, 4f2) sites. arXiv:1811.04101v2 [cond-mat.mtrl-sci]

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Magnetic properties of Zn-Sn-substituted Ba-ferrite powders prepared by ball milling

Cited by 28 publications

References 11 publications

Crystal structure and magnetic properties of barium ferrite synthesized using GSPC and HEBM

Crystal structure and magnetic properties of barium ferrite synthesized using GSPC and HEBM

Magneto-crystalline properties of BaFe12−2x M x Sn x O19 (M = Sn, Ni, Zn) ferrite powders

Site preference and magnetic properties of Zn-Sn-substituted strontium hexaferrite

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