{"title":"化学共沉淀法制备的 Ga3+ 取代 Zn2Y 六铁氧体的磁结构和巨大介电性能","authors":"","doi":"10.1016/j.physb.2024.416635","DOIUrl":null,"url":null,"abstract":"<div><div>Y-type Ba<sub>0.5</sub>Sr<sub>1.5</sub>Zn<sub>2</sub>Fe<sub>12-<em>x</em></sub>Ga<sub><em>x</em></sub>O<sub>22</sub> (<em>x</em> = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0) hexaferrites are prepared through modified chemical co-precipitation method. X-ray diffraction (XRD) results reveal that these samples are single-phase and the space group is <span><math><mrow><mi>R</mi><mover><mn>3</mn><mo>‾</mo></mover><mi>m</mi></mrow></math></span>. The field-emission scanning electronic microscope (FE-SEM) measurements indicate that the grains are hexagonal-plate with a diameter of 2–5 μm. In the <em>M-T</em> diagrams, various magnetic structures are modulated, including proper-screw, longitudinal conical (LC), mixed conical (MC), and collinear ferrimagnetic (collinear FIM). In this series of samples, the values of dielectric constant (<span><math><mrow><msup><mi>ε</mi><mo>′</mo></msup></mrow></math></span>) achieve an order increase from 10<sup>2</sup> to 10<sup>4</sup>. For the best <em>x</em> = 0.8 sample, the <span><math><mrow><msup><mi>ε</mi><mo>′</mo></msup></mrow></math></span> is as high as 1804.76 at 1 MHz and 300 K. In conclusion, Ba<sub>0.5</sub>Sr<sub>1.5</sub>Zn<sub>2</sub>Fe<sub>12-<em>x</em></sub>Ga<sub><em>x</em></sub>O<sub>22</sub> with controllable magnetic structures and colossal dielectric constant are potential materials for miniaturization of modern electronic devices.</div></div>","PeriodicalId":20116,"journal":{"name":"Physica B-condensed Matter","volume":null,"pages":null},"PeriodicalIF":2.8000,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Magnetic structure and colossal dielectric properties in Ga3+ substituted Zn2Y hexaferrites by chemical co-precipitation method\",\"authors\":\"\",\"doi\":\"10.1016/j.physb.2024.416635\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Y-type Ba<sub>0.5</sub>Sr<sub>1.5</sub>Zn<sub>2</sub>Fe<sub>12-<em>x</em></sub>Ga<sub><em>x</em></sub>O<sub>22</sub> (<em>x</em> = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0) hexaferrites are prepared through modified chemical co-precipitation method. X-ray diffraction (XRD) results reveal that these samples are single-phase and the space group is <span><math><mrow><mi>R</mi><mover><mn>3</mn><mo>‾</mo></mover><mi>m</mi></mrow></math></span>. The field-emission scanning electronic microscope (FE-SEM) measurements indicate that the grains are hexagonal-plate with a diameter of 2–5 μm. In the <em>M-T</em> diagrams, various magnetic structures are modulated, including proper-screw, longitudinal conical (LC), mixed conical (MC), and collinear ferrimagnetic (collinear FIM). In this series of samples, the values of dielectric constant (<span><math><mrow><msup><mi>ε</mi><mo>′</mo></msup></mrow></math></span>) achieve an order increase from 10<sup>2</sup> to 10<sup>4</sup>. For the best <em>x</em> = 0.8 sample, the <span><math><mrow><msup><mi>ε</mi><mo>′</mo></msup></mrow></math></span> is as high as 1804.76 at 1 MHz and 300 K. In conclusion, Ba<sub>0.5</sub>Sr<sub>1.5</sub>Zn<sub>2</sub>Fe<sub>12-<em>x</em></sub>Ga<sub><em>x</em></sub>O<sub>22</sub> with controllable magnetic structures and colossal dielectric constant are potential materials for miniaturization of modern electronic devices.</div></div>\",\"PeriodicalId\":20116,\"journal\":{\"name\":\"Physica B-condensed Matter\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2024-10-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physica B-condensed Matter\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0921452624009761\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSICS, CONDENSED MATTER\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physica B-condensed Matter","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921452624009761","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
Magnetic structure and colossal dielectric properties in Ga3+ substituted Zn2Y hexaferrites by chemical co-precipitation method
Y-type Ba0.5Sr1.5Zn2Fe12-xGaxO22 (x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0) hexaferrites are prepared through modified chemical co-precipitation method. X-ray diffraction (XRD) results reveal that these samples are single-phase and the space group is . The field-emission scanning electronic microscope (FE-SEM) measurements indicate that the grains are hexagonal-plate with a diameter of 2–5 μm. In the M-T diagrams, various magnetic structures are modulated, including proper-screw, longitudinal conical (LC), mixed conical (MC), and collinear ferrimagnetic (collinear FIM). In this series of samples, the values of dielectric constant () achieve an order increase from 102 to 104. For the best x = 0.8 sample, the is as high as 1804.76 at 1 MHz and 300 K. In conclusion, Ba0.5Sr1.5Zn2Fe12-xGaxO22 with controllable magnetic structures and colossal dielectric constant are potential materials for miniaturization of modern electronic devices.
期刊介绍:
Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work.
Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas:
-Magnetism
-Materials physics
-Nanostructures and nanomaterials
-Optics and optical materials
-Quantum materials
-Semiconductors
-Strongly correlated systems
-Superconductivity
-Surfaces and interfaces