Evidence of room temperature magnetodielectric and cluster glass behavior of Sr substituted Y-type Ba2Mg2Fe11.48Mn0.52O22 hexaferrite

Abdullah, Md. F.; Devi, Sushma; Jena, Rasmita; Chandrakanta, K.; Pal, P.; Yadav, C. S.; Singh, Anil Kumar

doi:10.1016/j.jmmm.2022.169191

Cited by 1 publication

(3 citation statements)

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“…Similar behavior was also observed for SrBaMg 2 Fe 12 O 22 and Sr 1.5 Ba 0.5 Mg 2 Fe 12 O 22 at room temperature, BaSrMg 2 Fe 11.48 Mn 0.52 O 22 at 5 K, and for Ba 0.5 Sr 1.5 Zn 2– x Ni x Fe 12 O 22 at 4.2 K Figure b presents the difference in the hysteresis loop behavior at 300 K in the weak magnetic fields range for a Ba 0.5 Sr 1.5 Zn 2 Al 0.08 Fe 11.92 O 22 sample obtained by sol–gel autocombustion; as seen, a triple hysteresis curve is not observed .…”

Section: Magnetic Properties Of Y-hexaferritessupporting

confidence: 80%

“…The classical ceramic technology is the most popular method for preparation of complex polycrystalline oxides. A large amount of research effort has been focused on the preparation of single-phase Y-type hexaferrites. − In summary, the technique is based on a solid-state reaction of alkaline earth carbonates with metal oxides. The powders are homogenized by ball-milling and, after palletization, are synthesized at a high temperature in the 1100–1200 °C range to obtain single-phase Y-type hexaferrite.…”

Section: Synthesis Techniques Of Y-type Hexaferritesmentioning

confidence: 99%

“…Abdullah et al 22 investigated the Sr substitution effect in the Ba 2−x Sr x Mg 2 Fe 11.48 Mn 0.52 O 22 (0 < x ≤ 1) hexaferrite and found that the Sr substitution raises the spin ordering transition temperature from a proper screw state to a longitudinal conical spin state from 52 to 73 K and from a ferrimagnetic state to a proper screw state, from 210 to 315 K in a 100 Oe magnetic field. In another study, 21 they found that Mn doping at Fe sites raises the transformation temperature from a ferrimagnetic state to a proper screw state from 190 to 208 K, while a drop was seen in the proper screw to longitudinal conical spin transformation temperature from 35 to 25 K in Ba 2 Mg 2 (Fe 1−x Mn x ) 12 O 22 in a magnetic field of 100 Oe.…”

Section: ■ Magnetic Phase Transitionsmentioning

confidence: 99%

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Phase Transitions in Magneto-Electric Hexaferrites

et al. 2022

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Hexaferrites have long been the object of extensive studies because of their great possibility for applications�permanent magnets, highdensity recording media, microwave devices, in biomedicine, to name but a few. Lately, many researchers' efforts have been focused on the existence of the magneto-electric effect in some hexaferrite systems and the appealing possibility of them being used as single-phase multiferroic and magnetoelectric materials. As indicated by theoretical analyses, the origin of the large magneto-electric effect can be sought in the strong interaction between the magnetization and the electric polarization that coexist in insulators with noncollinear magnetic structures. The hexaferrites' magnetic structure and, particularly, the specific magnetic spin ordering are the key factors in observing magneto-electric phases in hexaferrites. Some of these phases are metastable, which hampers their direct practical use. However, as the hexaferrites' phase diagrams reveal, chemical doping can be used to prepare a number of noncollinear stable magnetic phases. Since the magneto-electric effect has to do with the magnetic moments ordering, it seems only logical that one should study the cation substitutions' influence on the magnetic phase transition temperature. In this paper, we summarize recent examples of advances in the exploration of magnetic phase transitions in Y-type hexaferrites. In particular, the effect is emphasized by substituting in Y-type hexaferrites the nonmagnetic Me 2+ cations with magnetic ones and of the magnetic Fe 3+ cations with nonmagnetic ones on their magnetic properties and magnetic phase transitions. The work deals with the structural properties of and the magnetic phase transitions in a specific Y-type hexaferrite, namely, Ba(Sr) 2 Me 2 Fe 12 O 22 .

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Section: Magnetic Properties Of Y-hexaferritessupporting

confidence: 80%