Magnetic Study on Divalent Ion Substituted Barium Hexaferrites

2021 ◽  
Vol 410 ◽  
pp. 714-719
Author(s):  
Denis Vinnik ◽  
Santhoshkumar Mahadevan ◽  
Puneet Sharma
Keyword(s):  
Magnetic Properties ◽  
Solid State ◽  
Barium Hexaferrite ◽  
Anisotropy Field ◽  
Magnetic Interaction ◽  
Ceramic Method ◽  
Saturation Magnetisation ◽  
State Ceramic ◽  
Saturation Remanence ◽  
Substituted Barium Hexaferrite

Magnetic properties of Co, Ni and Zn substituted barium hexaferrite (BaM) samples prepared by solid state ceramic method were studied. Saturation magnetisation were found higher for Zn-substituted BaM, whereas, coercivity is higher for Co2+ and Ni2+ ion substituted samples. Anisotropy field for all substituted samples was calculated by the law of approaching saturation. Remanence, squareness and thermomagnetic plot suggest Zn2+ ions restricts the magnetic interaction of various sites in BaM.

Study the Effect of the Substitution of Ba with Pr in Barium Ferrite Powder on Magnetic Properties

2014 ◽  
Vol 1025-1026 ◽  
pp. 440-444
Author(s):  
Pornpen Marawichayo ◽  
Wirunya Keawwattana ◽  
Nattamon Koonsaeng ◽  
Pongsakorn Jantaratana
Keyword(s):  
Magnetic Properties ◽  
Coercive Field ◽  
Barium Ferrite ◽  
Barium Hexaferrite ◽  
Ferrite Powder ◽  
X Ray Diffraction ◽  
One Pot ◽  
X Ray ◽  
Saturation Magnetisation ◽  
Substituted Barium Hexaferrite

Pr substituted barium hexaferrite, Ba1-xPrxFe12O19 with x = 0.00-0.20 were synthesized by Oxide One Pot Synthesis (OOPS) process. The phase composition of Ba1-xPrxFe12O19 were characterized by X-ray diffraction analysis (XRD). The phase morphology of the barium hexaferrite powder was studied by scanning electron microscope (SEM) and energy dispersive X-ray (EDX) spectroscopy confirmed that the Pr completely substituted into barium ferrite. The magnetic properties was investigated by vibrating sample magnetometry (VSM). It was found that saturation magnetisation and coercive field can be improved by the substitution of Ba with Pr in BaFe12O19 powder. The saturation magnetisation increased at first to the maximum of 50 emu g-1 (x = 0.15) and then decreased to the 34 emu g-1 (x = 0.20), while the coercive field increased remarkably with increasing Pr ions content.

scholarly journals Synthesis, Structural and Morphological Property of BaSnO3 Nanopowder Prepared by Solid State Ceramic Method

2017 ◽  
Vol 195 ◽  
pp. 012007 ◽  
Author(s):  
Jibi John ◽  
V.P Mahadevan Pillai ◽  
Anitta Rose Thomas ◽  
Reji Philip ◽  
Jaison Joseph ◽  
...  
Keyword(s):  
Solid State ◽  
Morphological Property ◽  
Ceramic Method ◽  
State Ceramic

Magnetic Properties of Mn Substituted Barium Hexaferrite Single Crystals

2016 ◽  
Vol 843 ◽  
pp. 155-160 ◽  
Author(s):  
D.A. Vinnik ◽  
I.A. Zakharchuk ◽  
Erkki Lähderanta
Keyword(s):  
Magnetic Properties ◽  
Curie Temperature ◽  
Single Crystal ◽  
Saturation Magnetization ◽  
Single Crystals ◽  
Room Temperature ◽  
Barium Hexaferrite ◽  
Substituted Barium Hexaferrite ◽  
Fe Substitution

This paper presents magnetic properties of manganese substituted barium hexaferrite BaFe12-xMnxO19 single crystals. Crystals of BaFe12–xMnxO19 with x up to 1.5 and sizes up to 8 mm were observed. The influence of Fe substitution by Mn on the magnetic properties was investigated. For the BaFe10.5Mn1.5O19 single crystal samples saturation magnetization reduced from 72 to 63.5 emu/g at room temperature, and Curie temperature decreased from 455 to 380 °C.

Dielectric and magnetic properties of Mg–Ti substituted barium hexaferrite

2013 ◽  
Vol 39 (5) ◽  
pp. 5713-5723 ◽  
Author(s):  
Vaishali V. Soman ◽  
V.M. Nanoti ◽  
D.K. Kulkarni
Keyword(s):  
Magnetic Properties ◽  
Barium Hexaferrite ◽  
Substituted Barium Hexaferrite

scholarly journals Lead-substituted barium hexaferrite for tunable terahertz optoelectronics

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
L. N. Alyabyeva ◽  
A. S. Prokhorov ◽  
D. A. Vinnik ◽  
V. B. Anzin ◽  
A. G. Ahmed ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Electric Fields ◽  
Communication Systems ◽  
Barium Hexaferrite ◽  
Wide Distribution ◽  
Electromagnetic Properties ◽  
Electromagnetic Response ◽  
Complex Crystal Structure ◽  
Physical Phenomena ◽  
Substituted Barium Hexaferrite

AbstractDue to their outstanding dielectric and magnetic properties, hexaferrites are attracting ever-increasing attention for developing electronic components of next-generation communication systems. The complex crystal structure of hexaferrites and the critical dependences of their electric and magnetic properties on external factors, such as magnetic/electric fields, pressure, and doping, open ample opportunities for targeted tuning of these properties when designing specific devices. Here we explored the electromagnetic properties of lead-substituted barium hexaferrite, Ba1−xPbxFe12O19, a compound featuring an extremely rich set of physical phenomena that are inherent in the dielectric and magnetic subsystems and can have a significant effect on its electromagnetic response at terahertz frequencies. We performed the first detailed measurements of the temperature-dependent (5–300 K) dielectric response of single-crystalline Ba1−xPbxFe12O19 in an extremely broad spectral range of 1 Hz–240 THz. We fully analyzed numerous phenomena with a corresponding wide distribution of specific energies that can affect the terahertz properties of the material. The most important fundamental finding is the observation of a ferroelectric-like terahertz excitation with an unusual temperature behavior of its frequency and strength. We suggest microscopic models that explain the origin of the excitation and its nonstandard temperature evolution. Several narrower terahertz excitations are associated with electronic transitions between the fine-structure components of the Fe2+ ground state. The discovered radio-frequency relaxations are attributed to the response of magnetic domains. Gigahertz resonances are presumably of magnetoelectric origin. The obtained data on diverse electromagnetic properties of Ba1−xPbxFe12O19 compounds provide information that makes the entire class of hexaferrites attractive for manufacturing electronic devices for the terahertz range.

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