{"title":"层状Mn2P2S6和Cu0.52Mn1.74P2S6晶体的电导率研究","authors":"A. Dziaugys, J. Banys, Y. Vysochanskii","doi":"10.1109/ISAF.2012.6297776","DOIUrl":null,"url":null,"abstract":"The dielectric properties of Mn<sub>2</sub>P<sub>2</sub>S<sub>6</sub> and Cu<sub>0.52</sub>Mn<sub>1.74</sub>P<sub>2</sub>S<sub>6</sub> crystals were investigated in broad frequency (20 Hz-1 MHz) and temperature range (100 K-430 K). No anomaly in temperature dependence of complex dielectric permittivity indicating the polar phase transition can be detected in measured temperature range. The dielectric properties of presented crystals are mainly caused by high conductivity. The frequency spectra of conductivity obey the Almond-West power law. The activation energy of conductivity was found to be E<sub>A</sub>/k= 0.82 eV (Mn<sub>2</sub>P<sub>2</sub>S<sub>6</sub>) and E<sub>A</sub>/k= 0.81 eV (Cu<sub>0.52</sub>Mn<sub>1.74</sub>P<sub>2</sub>S<sub>6</sub>). A suggestion is given that the electric conductivity in these crystals can be interpreted by electronic mechanism.","PeriodicalId":20497,"journal":{"name":"Proceedings of ISAF-ECAPD-PFM 2012","volume":"41 4","pages":"1-3"},"PeriodicalIF":0.0000,"publicationDate":"2012-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Conductivity investigations of layered Mn2P2S6 and Cu0.52Mn1.74P2S6 crystals\",\"authors\":\"A. Dziaugys, J. Banys, Y. Vysochanskii\",\"doi\":\"10.1109/ISAF.2012.6297776\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The dielectric properties of Mn<sub>2</sub>P<sub>2</sub>S<sub>6</sub> and Cu<sub>0.52</sub>Mn<sub>1.74</sub>P<sub>2</sub>S<sub>6</sub> crystals were investigated in broad frequency (20 Hz-1 MHz) and temperature range (100 K-430 K). No anomaly in temperature dependence of complex dielectric permittivity indicating the polar phase transition can be detected in measured temperature range. The dielectric properties of presented crystals are mainly caused by high conductivity. The frequency spectra of conductivity obey the Almond-West power law. The activation energy of conductivity was found to be E<sub>A</sub>/k= 0.82 eV (Mn<sub>2</sub>P<sub>2</sub>S<sub>6</sub>) and E<sub>A</sub>/k= 0.81 eV (Cu<sub>0.52</sub>Mn<sub>1.74</sub>P<sub>2</sub>S<sub>6</sub>). A suggestion is given that the electric conductivity in these crystals can be interpreted by electronic mechanism.\",\"PeriodicalId\":20497,\"journal\":{\"name\":\"Proceedings of ISAF-ECAPD-PFM 2012\",\"volume\":\"41 4\",\"pages\":\"1-3\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2012-07-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of ISAF-ECAPD-PFM 2012\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISAF.2012.6297776\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of ISAF-ECAPD-PFM 2012","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISAF.2012.6297776","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
研究了Mn2P2S6和Cu0.52Mn1.74P2S6晶体在宽频率(20 Hz-1 MHz)和温度范围(100 K-430 K)下的介电特性，在测量温度范围内，未发现复介电常数与温度的关系异常，表明极性相变。所述晶体的介电性能主要由高导电性引起。电导率的频谱服从Almond-West幂律。电导率活化能分别为EA/k= 0.82 eV (Mn2P2S6)和EA/k= 0.81 eV (Cu0.52Mn1.74P2S6)。提出这些晶体的导电性可以用电子机制来解释。
Conductivity investigations of layered Mn2P2S6 and Cu0.52Mn1.74P2S6 crystals
The dielectric properties of Mn2P2S6 and Cu0.52Mn1.74P2S6 crystals were investigated in broad frequency (20 Hz-1 MHz) and temperature range (100 K-430 K). No anomaly in temperature dependence of complex dielectric permittivity indicating the polar phase transition can be detected in measured temperature range. The dielectric properties of presented crystals are mainly caused by high conductivity. The frequency spectra of conductivity obey the Almond-West power law. The activation energy of conductivity was found to be EA/k= 0.82 eV (Mn2P2S6) and EA/k= 0.81 eV (Cu0.52Mn1.74P2S6). A suggestion is given that the electric conductivity in these crystals can be interpreted by electronic mechanism.
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