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

Structural, optical and magnetic properties of Sm doped yttrium orthoferrite (YFeO) obtained by sol-gel synthesis route., Bharadwaj, P S. J., Kundu Swarup, Kollipara Vijay Sai, and Varma Kalidindi B. R. , J Phys Condens Matter, 2020 Jan 16, Volume 32, Issue 3, p.035810, (2020)

Spinel ferrite nanoparticles and nanocomposites for biomedical applications and their toxicity., Kefeni, Kebede K., Msagati Titus A. M., Nkambule Thabo Ti, and Mamba Bhekie B. , Mater Sci Eng C Mater Biol Appl, 2020 Feb, Volume 107, p.110314, (2020)

Chemical Solution Deposition of Ordered 2D Arrays of Room-Temperature Ferrimagnetic Cobalt Ferrite Nanodots., Xu, Jin, Varghese Justin, Portale Giuseppe, Longo Alessandro, Momand Jamo, Syari'ati Ali, Heuver Jeroen A., Rudolf Petra, Kooi Bart J., Noheda Beatriz, et al. , Polymers (Basel), 2019 Sep 30, Volume 11, Issue 10, (2019)

Synthesis of Rice-Husk-Carbon-Supported Nickel Ferrite Catalyst for Reduction of Nitrophenols., Han, Fengyan, Xu Xusheng, Fu Yongsheng, and Wang Xin , J Nanosci Nanotechnol, 2019 Sep 01, Volume 19, Issue 9, p.5838-5846, (2019)

Magnetically retrievable ferrite nanoparticles in the catalysis application., Amiri, Mahnaz, Eskandari Khalil, and Salavati-Niasari Masoud , Adv Colloid Interface Sci, 2019 Sep, Volume 271, p.101982, (2019)

Heterogeneous sonocatalytic degradation of an anionic dye in aqueous solution using a magnetic lanthanum dioxide carbonate-doped zinc ferrite-reduced graphene oxide nanostructure., Han, Jonghun, Jun Byung-Moon, Heo Jiyong, Kim Sewoon, Yoon Yeomin, and Park Chang Min , Ecotoxicol Environ Saf, 2019 Oct 30, Volume 182, p.109396, (2019)

Impact of sonochemical synthesis condition on the structural and physical properties of MnFeO spinel ferrite nanoparticles., Yadav, Raghvendra Singh, Kuřitka Ivo, Vilčáková Jarmila, Jamatia Thaiskang, Machovský Michal, Škoda David, Urbánek Pavel, Masař Milan, Urbánek Michal, Kalina Lukáš, et al. , Ultrason Sonochem, 2019 Oct 23, Volume 61, p.104839, (2019)

In situ construction of yolk-shell zinc ferrite with carbon and nitrogen co-doping for highly efficient solar light harvesting and improved catalytic performance., Li, Jianan, Li Xinyong, Chen Xin, Yin Zhifan, Li Yaxuan, and Jiang Xuchuan , J Colloid Interface Sci, 2019 Oct 15, Volume 554, p.91-102, (2019)

CuI incorporated cobalt ferrite nanoparticles as a magnetically separable catalyst for oxidative amidation reaction., Dutta, Mintu Maan, Talukdar Hrishikesh, and Phukan Prodeep , Dalton Trans, 2019 Nov 14, Volume 48, Issue 42, p.16041-16052, (2019)

Lanthanum ferrite nanoparticles modification onto biochar: derivation from four different methods and high performance for phosphate adsorption., Yang, Bei, Feng Yanfang, Yu Yingliang, He Shiyin, Liu Hao, Xue Lihong, and Yang Linzhang , Environ Sci Pollut Res Int, 2019 May 29, (2019)

A Novel Study: The Effect of Graphene Oxide on the Morphology, Crystal Structure, Optical and Electrical Properties of Lanthanum Ferrite Based Nano Electroceramics Synthesized by Hydrothermal Method., Aydin, Cihat, Aydin Handan, Taskin Mustafa, and Yakuphanoglu Fahrettin , J Nanosci Nanotechnol, 2019 May 01, Volume 19, Issue 5, p.2547-2555, (2019)

Unary and binary adsorption studies of lead and malachite green onto a nanomagnetic copper ferrite/drumstick pod biomass composite., Khan, Moonis Ali, Otero Marta, Kazi Mohsin, Alqadami Ayoub Abdullah, Wabaidur Saikh Mohammad, Siddiqui Masoom Raza, Alothman Zeid Abdullah, and Sumbul Sadia , J Hazard Mater, 2019 Mar 05, Volume 365, p.759-770, (2019)

Electrical and Magnetic Properties of Barium Hexaferrite Modified Barium Zirconium Titanate Lead-Free Ceramics., Jarupoom, Pakpoom, Jaita Pharatree, Manotham Supalak, Phatungthane Thanatep, Chokethawai Komsanti, Randorn Chamnan, and Rujijanagul Gobwute , J Nanosci Nanotechnol, 2019 Mar 01, Volume 19, Issue 3, p.1276-1282, (2019)

Low-temperature pseudomorphic transformation of polyhedral MIL-88A to lithium ferrite (LiFeO) in aqueous LiOH medium toward high Li storage., Hu, Xiaoshi, Xiang Shuyan, Sun Hao, Lou Xiaobing, Xiong Qinqin, Lu Xiaoxiao, Qin Haiying, Ji Zhenguo, and Hu Bingwen , Nanoscale, 2019 Jun 20, Volume 11, Issue 24, p.11892-11901, (2019)

Room Temperature Blocked Magnetic Nanoparticles Based on Ferrite Promoted by a Three-Step Thermal Decomposition Process., Sartori, Kevin, Choueikani Fadi, Gloter Alexandre, Begin-Colin Sylvie, Taverna Dario, and Pichon Benoit P. , J Am Chem Soc, 2019 Jun 14, (2019)