Characteristics of Magnetic Properties of Substituted Hexagonal Ferrites
The samples of barium hexaferrite BaFe<sub>12-2x</sub>(Me<sub>1</sub>Me<sub>2</sub>)<sub>x</sub>O<sub>19</sub> with x from 0.0 to 0.6 were prepared by variousmethods. The cationic preference of mainly divalent Me<sub>1</sub> = Z...
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| Format: | Article |
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VSB-Technical University of Ostrava
2006-01-01
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| Series: | Advances in Electrical and Electronic Engineering |
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| Online Access: | http://advances.utc.sk/index.php/AEEE/article/view/222 |
| _version_ | 1797827162012647424 |
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| author | Vladimir Jancarik Anna Gruskova Jozef Slama Rastislav Dosoudil Alvaro Gonzalez Guillermo Mendoza |
| author_facet | Vladimir Jancarik Anna Gruskova Jozef Slama Rastislav Dosoudil Alvaro Gonzalez Guillermo Mendoza |
| author_sort | Vladimir Jancarik |
| collection | DOAJ |
| description | The samples of barium hexaferrite BaFe<sub>12-2x</sub>(Me<sub>1</sub>Me<sub>2</sub>)<sub>x</sub>O<sub>19</sub> with x from 0.0 to 0.6 were prepared by variousmethods. The cationic preference of mainly divalent Me<sub>1</sub> = Zn, Co, Ni, Sn ions and tetravalent Me<sub>2</sub> = Ti, Zr, Ir, Sn, Ru ionsand their combinations in substituted Ba ferrites was investigated. The substitutions were performed to reduce the grain sizeand high magnetic uniaxial anisotropy field of the M-type Ba ferrite without affecting the magnetic polarisation. The goal isto reach the properties of ferrite proper for high-density magnetic recording and microwave absorption devices. Magneticproperties were determined as a function of the substitution level x. The specific saturation magnetic polarisation Js–m andremanence Js–rincreased with small x due to the substitution of non-magnetic and less magnetic ions in 4f<sub>1</sub> and 4f<sub>2</sub> sites. Thesteep decrease of coercivity Hc with increasing x may be caused by the Co<sup>2+</sup> preference of 4f<sub>2</sub> site and Ti<sup>4+</sup>or Zr<sup>4+</sup>ions preference of 2b and slightly in 4f<sub>1</sub> sites. The temperature coefficient of the coercivity TKHc was very low (0.01kA.m<sup>-1</sup>.°C<sup>-1</sup>)for the Co-Zr substitutions and positive for the rest of samples. |
| first_indexed | 2024-04-09T12:43:49Z |
| format | Article |
| id | doaj.art-184a9613ce7349e9ad2f3b8c8db400ea |
| institution | Directory Open Access Journal |
| issn | 1336-1376 1804-3119 |
| language | English |
| last_indexed | 2024-04-09T12:43:49Z |
| publishDate | 2006-01-01 |
| publisher | VSB-Technical University of Ostrava |
| record_format | Article |
| series | Advances in Electrical and Electronic Engineering |
| spelling | doaj.art-184a9613ce7349e9ad2f3b8c8db400ea2023-05-14T20:50:05ZengVSB-Technical University of OstravaAdvances in Electrical and Electronic Engineering1336-13761804-31192006-01-0151344346254Characteristics of Magnetic Properties of Substituted Hexagonal FerritesVladimir JancarikAnna GruskovaJozef SlamaRastislav DosoudilAlvaro GonzalezGuillermo MendozaThe samples of barium hexaferrite BaFe<sub>12-2x</sub>(Me<sub>1</sub>Me<sub>2</sub>)<sub>x</sub>O<sub>19</sub> with x from 0.0 to 0.6 were prepared by variousmethods. The cationic preference of mainly divalent Me<sub>1</sub> = Zn, Co, Ni, Sn ions and tetravalent Me<sub>2</sub> = Ti, Zr, Ir, Sn, Ru ionsand their combinations in substituted Ba ferrites was investigated. The substitutions were performed to reduce the grain sizeand high magnetic uniaxial anisotropy field of the M-type Ba ferrite without affecting the magnetic polarisation. The goal isto reach the properties of ferrite proper for high-density magnetic recording and microwave absorption devices. Magneticproperties were determined as a function of the substitution level x. The specific saturation magnetic polarisation Js–m andremanence Js–rincreased with small x due to the substitution of non-magnetic and less magnetic ions in 4f<sub>1</sub> and 4f<sub>2</sub> sites. Thesteep decrease of coercivity Hc with increasing x may be caused by the Co<sup>2+</sup> preference of 4f<sub>2</sub> site and Ti<sup>4+</sup>or Zr<sup>4+</sup>ions preference of 2b and slightly in 4f<sub>1</sub> sites. The temperature coefficient of the coercivity TKHc was very low (0.01kA.m<sup>-1</sup>.°C<sup>-1</sup>)for the Co-Zr substitutions and positive for the rest of samples.http://advances.utc.sk/index.php/AEEE/article/view/222substituted hexagoval ferritestemperature coefficientmagnetic polarisation. |
| spellingShingle | Vladimir Jancarik Anna Gruskova Jozef Slama Rastislav Dosoudil Alvaro Gonzalez Guillermo Mendoza Characteristics of Magnetic Properties of Substituted Hexagonal Ferrites Advances in Electrical and Electronic Engineering substituted hexagoval ferrites temperature coefficient magnetic polarisation. |
| title | Characteristics of Magnetic Properties of Substituted Hexagonal Ferrites |
| title_full | Characteristics of Magnetic Properties of Substituted Hexagonal Ferrites |
| title_fullStr | Characteristics of Magnetic Properties of Substituted Hexagonal Ferrites |
| title_full_unstemmed | Characteristics of Magnetic Properties of Substituted Hexagonal Ferrites |
| title_short | Characteristics of Magnetic Properties of Substituted Hexagonal Ferrites |
| title_sort | characteristics of magnetic properties of substituted hexagonal ferrites |
| topic | substituted hexagoval ferrites temperature coefficient magnetic polarisation. |
| url | http://advances.utc.sk/index.php/AEEE/article/view/222 |
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