Magnetic properties of Co–Ti substituted barium hexaferrite

Zhang, Wenjie; Bai, Yang; Han, Xiao; Wang, Liang; Lu, Xuefei; Li, Qiao

doi:10.1016/j.jallcom.2012.08.029

Cited by 86 publications

(24 citation statements)

References 25 publications

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“…Different cations such as Al [17], Ga, Sc, In [18,19], and various cationic combination such as, Ni-Ti [20], Co-Zr [21], Co-Sn [22], Zr-Zn [23], Co-Gd [24], Mn-Ti [25], Ni-Ru, Zn-Ru [26], Ti-Ru [27], and Co-Ti [28,29], were substituted for Fe in Barium hexaferrites. These substitutions were found to cause modifications of the magnetic properties and induce significant changes in several substituted systems.…”

Section: Introductionmentioning

confidence: 99%

“…Co-Ti substituted barium hexaferrites exhibit suitable properties in a wide range of industrial application [28,29,30]. It was found that small amounts of Co 2+ and Ti 4+ substituting for Fe 3+ in BaFe 12-2x Co x Ti x O 19 , can substantially reduce the coercive field, H C , with only a littlie change in saturation magnetization [28,29,30,31,32,33,34].…”

Section: Introductionmentioning

confidence: 99%

“…It was found that small amounts of Co 2+ and Ti 4+ substituting for Fe 3+ in BaFe 12-2x Co x Ti x O 19 , can substantially reduce the coercive field, H C , with only a littlie change in saturation magnetization [28,29,30,31,32,33,34]. On the other hand, with Ru-Ti substitution, the saturation magnetization at room temperature was found to increase up to x = 0.2, and then to decrease for higher x values, while the coercivity decreases monotonically, recording a reduction of about 55% at x = 0.4 [27].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Magnetic study of M-type doped barium hexaferrite nanocrystalline particles

Alsmadi

Bsoul

Mahmood

et al. 2013

Journal of Applied Physics

127

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Co-Ti and Ru-Ti substituted barium ferrite nanocrystalline particles BaFe 12-2x ) were prepared by ball milling method, and their magnetic properties and their temperature dependencies were studied. The zero-field-cooled (ZFC) and field-cooled (FC) processes were recorded at low magnetic fields and the ZFC curves displayed a broad peak at a temperature T M . In all samples under investigation, a clear irreversibility between the ZFC and FC curves was observed below room temperature, and this irreversibility disappeared above room temperature. These results were discussed within the framework of random particle assembly model and associated with the magnetic domain wall motion. The resistivity data show some kind of a transition from insulator to perfect insulator around M T . At 2 K, the saturation magnetization slightly decreased and the coercivity dropped dramatically with increasing the Co-Ti concentration x. With Ru-Ti substitution, the 2 saturation magnetization showed small variations, while the coercivity decreased monotonically, recording a reduction of about 73% at x = 0.6. These results were discussed in light of the single ion anisotropy model and the cationic distributions based on previously reported neutron diffraction data for the CoTi substituted system, and the results of our Mössbauer spectroscopy data for the RuTi substituted system.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Magnetic study of M-type doped barium hexaferrite nanocrystalline particles

Alsmadi

Bsoul

Mahmood

et al. 2013

Journal of Applied Physics

127

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“…ions reduced magnetocrystalline anisotropy constant K 1 , which led to variety of H c . Co-Ti ion substitution made the magnetocrystalline anisotropy transform from uniaxial anisotropy to planar anisotropy [26]. As x was about 1.20, the uniaxial anisotropy reduces and magnetocrystalline anisotropy turns to planar.…”

Section: Resultsmentioning

confidence: 99%

The transformation behavior of M-type barium ferrites due to Co–Ti substitution

Zhang

Liu

et al. 2015

J Mater Sci: Mater Electron

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In this paper, we synthesized Co-Ti equiatomic co-substitution of M-type barium ferrites [BaFe 12-2x (CoTi) x O 19 , x = 1.00-1.30 with step of 0.05] by solid state reaction method. All samples exhibited a single-phase M-type barium ferrite structure, compared with pure M-type barium ferrite (x = 0.00). With increasing of Co-Ti content, saturation magnetization (M s ) decreased, gradually. However, coercivity (H c ) appeared decreased first and then increased after x = 1.20. The minimum value of coercivity was 258.08 Oe at x = 1.20. Meanwhile, magnetic permeability (l) also first increased to a high value and then decreased rapidly after x = 1.20. The maximum value of l reached about 25 (at x = 1.10). The appropriate contents of Co-Ti substitution makes the magnetocrystalline anisotropy transform from uniaxial to planar anisotropy. Due to Co-Ti substitution, the magnetocrystalline anisotropy constant decreases from a high value and reach a minimum value, and changes from positive to negative value, increases oppositely, this determines the changes of magnetic properties.

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“…The intrinsic magnetic properties of the barium hexaferrite can be changed by partial substitutions for Ba or Fe sites [6][7][8][9][10][11][12]. Previous works have shown that the magnetic properties of barium hexaferrite could be changed by substituting Ba 2+ with rare earth ions [10,[13][14][15].…”

Section: Introductionmentioning

confidence: 99%