About Ferrites

solid oxide fuel cell cathode and electrolyte cross section by SEM

Ferrites are iron oxide-based ceramic materials with magnetic properties, useful in many types of electronic devices and building materials. Ferrites are hard, brittle, generally gray or black, and typically have a crystal structure which has more than one type of site for the cations. Usually the magnetic moments of the metal ions on sites of one type are parallel to each other and anti-parallel to the moments on at least one site of another type. Ferrites are produced by sintering finely powdered precursor compounds in molds, milling the resulting material into a fine powder, and then re-sintering, with the second sintering round usually conducted in a magnetic field to ensure that the particles align properly.

Commercial ferrites can be classified as hard or soft.

Soft ferrites are used in transformer or electromagnetic cores. They have low coercivity and high resistivity, and contain iron, oxygen, zinc, or manganese.

Hard ferrites have high coercivity, and therefore are used as permanent magnets. Since ferrite permanent magnets are cheaper, and also weaker, than other available permanent magnets, they are frequently used in household products such as refrigerator magnets, and as mediums for magnetic recording. Strontium ferrite, barium ferrite, and Cobalt Ferritecobalt ferrite are all considered hard ferrites.

Recent Research & Development for Ferrites

Ultrafine Mn ferrite by anchoring in a cellulose framework for efficient toxic ions capture and fast water/oil separation., Wang, Hanwei, Chen Yipeng, Dang Baokang, Shen Xiaoping, Jin Chunde, Sun Qingfeng, and Pei Jianchuan , Carbohydr Polym, 2018 Sep 15, Volume 196, p.117-125, (2018)

Synthesis of zeolite/nickel ferrite/sodium alginate bionanocomposite via a co-precipitation technique for efficient removal of water-soluble methylene blue dye., Bayat, Mahsa, Javanbakht Vahid, and Esmaili Javad , Int J Biol Macromol, 2018 Sep, Volume 116, p.607-619, (2018)

Magnetic ferrite particles combined with electrothermal atomic absorption spectrometry for the speciation of low concentrations of arsenic., López-García, Ignacio, Marín-Hernández Juan José, and Hernández-Córdoba Manuel , Talanta, 2018 May 01, Volume 181, p.6-12, (2018)

Lithium Storage Performance of Zinc Ferrite Nanoparticle Synthesized with the Assistance of Triblock Copolymer P123., Yao, J H., Li Y W., Song X B., Zhang Y F., and Yan J , J Nanosci Nanotechnol, 2018 May 01, Volume 18, Issue 5, p.3599-3605, (2018)

An efficient and cost-effective tri-functional electrocatalyst based on cobalt ferrite embedded nitrogen doped carbon., Alshehri, Saad M., Alhabarah Ameen N., Ahmed Jahangeer, Naushad Mu, and Ahamad Tansir , J Colloid Interface Sci, 2018 Mar 15, Volume 514, p.1-9, (2018)

Synthesis and application of bismuth ferrite nanosheets supported functionalized carbon nanofiber for enhanced electrochemical detection of toxic organic compound in water samples., Ramaraj, Sukanya, Mani Sakthivel, Chen Shen-Ming, Kokulnathan Thangavelu, Lou Bih-Show, M Ali Ajmal, Hatamleh A A., and Al-Hemaid Fahad M. A. , J Colloid Interface Sci, 2018 Mar 15, Volume 514, p.59-69, (2018)

Reduced graphene oxide/BiFeO3 nanohybrids-based signal-on photoelectrochemical sensing system for prostate-specific antigen detection coupling with magnetic microfluidic device., Zhou, Qian, Lin Youxiu, Zhang Kangyao, Li Meijin, and Tang Dianping , Biosens Bioelectron, 2018 Mar 15, Volume 101, p.146-152, (2018)

Applications of cobalt ferrite nanoparticles in biomedical nanotechnology., Srinivasan, Sumithra Y., Paknikar Kishore M., Bodas Dhananjay, and Gajbhiye Virendra , Nanomedicine (Lond), 2018 Jun 08, (2018)

A novel method for vanadium slag comprehensive utilization to synthesize Zn-Mn ferrite and Fe-V-Cr alloy., Liu, Shi-Yuan, Li Shu-Jin, Wu Shun, Wang Li-Jun, and Chou Kuo-Chih , J Hazard Mater, 2018 Jul 15, Volume 354, p.99-106, (2018)

Niobium Doped Lanthanum Strontium Ferrite as A Redox-Stable and Sulfur-Tolerant Anode for Solid Oxide Fuel Cells., Li, Jingwei, Wei Bo, Cao Zhiqun, Yue Xing, Zhang Yaxin, and Lü Zhe , ChemSusChem, 2018 Jan 10, Volume 11, Issue 1, p.254-263, (2018)

Incorporation of Cadmium and Nickel into Ferrite Spinel Solid Solution: X-ray Diffraction and X-ray Absorption Fine Structure Analyses., Su, Minhua, Liao Changzhong, Chan Tingshan, Shih Kaimin, Xiao Tangfu, Chen Diyun, Kong Lingjun, and Song Gang , Environ Sci Technol, 2018 Jan 05, (2018)

Enhanced Switchable Ferroelectric Photovoltaic Effects in Hexagonal Ferrite Thin Films via Strain Engineering., Han, Hyeon, Kim Donghoon, Chu Kanghyun, Park Jucheol, Nam Sang Yeol, Heo Seungyang, Yang Chan-Ho, and Jang Hyun Myung , ACS Appl Mater Interfaces, 2018 Jan 02, (2018)

The synthesis of a monodisperse quaternary ferrite (FeCoCrO4) from the hot injection thermolysis of the single source precursor [CrCoFeO(O2CtBu)6(HO2CtBu)3]., Abdulwahab, Khadijat O., Malik Mohammad A., O'Brien Paul, Vitorica-Yrezabal Iñigo J., Timco Grigore A., Tuna Floriana, and Winpenny Richard E. P. , Dalton Trans, 2018 Jan 02, Volume 47, Issue 2, p.376-381, (2018)

Controllable mullite bismuth ferrite micro/nanostructures with multifarious catalytic activities for switchable/hybrid catalytic degradation processes., Hu, Zhong-Ting, Da Oh Wen-, Liu Yiquan, Yang En-Hua, and Lim Teik-Thye , J Colloid Interface Sci, 2018 Jan 01, Volume 509, p.502-514, (2018)

Heterogeneous sono-Fenton-like process using magnetic cobalt ferrite-reduced graphene oxide (CoFe2O4-rGO) nanocomposite for the removal of organic dyes from aqueous solution., Hassani, Aydin, Çelikdağ Gülşah, Eghbali Paria, Sevim Melike, Karaca Semra, and Metin Önder , Ultrason Sonochem, 2018 Jan, Volume 40, Issue Pt A, p.841-852, (2018)