Pub Date : 2021-09-01DOI: 10.4313/JKEM.2021.34.5.382
Geon-Ju Lee, Hwang-Pill Kim, Ho-yong Lee, W. Jo
{"title":"Effect of Internal Bias Field on Poling Behavior in Mn-Doped Pb(Mg 1/3 Nb 2/3 )O 3 -29 mol%PbTiO 3 Single Crystal","authors":"Geon-Ju Lee, Hwang-Pill Kim, Ho-yong Lee, W. Jo","doi":"10.4313/JKEM.2021.34.5.382","DOIUrl":"https://doi.org/10.4313/JKEM.2021.34.5.382","url":null,"abstract":"","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84332851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.4313/JKEM.2021.34.1.16
Young-Gon Kim, Y. Park
{"title":"Surface and Physical Properties of Polymer Insulator Coated with Diamond-Like Carbon Thin Film","authors":"Young-Gon Kim, Y. Park","doi":"10.4313/JKEM.2021.34.1.16","DOIUrl":"https://doi.org/10.4313/JKEM.2021.34.1.16","url":null,"abstract":"","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77352366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.4313/JKEM.2021.34.1.44
Dong-pyo Kim, Kyung-seob Kim
{"title":"Study on the MTTF of Multi Wave Lengths IR and NIR LEDs Module","authors":"Dong-pyo Kim, Kyung-seob Kim","doi":"10.4313/JKEM.2021.34.1.44","DOIUrl":"https://doi.org/10.4313/JKEM.2021.34.1.44","url":null,"abstract":"","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72825390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.4313/JKEM.2021.34.1.78
Han Seok Cheong, Kim，Chung-Hyeok
{"title":"A Study of Hydraulic Turbine Design for The Discharge Water Energy Harvesting","authors":"Han Seok Cheong, Kim，Chung-Hyeok","doi":"10.4313/JKEM.2021.34.1.78","DOIUrl":"https://doi.org/10.4313/JKEM.2021.34.1.78","url":null,"abstract":"","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88899378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.4313/JKEM.2021.34.3.214
Dong-Wook Byun, M. Shin, J. Moon, W. Bahng, W. Shin, Jong‐Min Oh, Chulhwan Park, S. Koo
{"title":"Deep Level Defect Transient Spectroscopy Analysis of 4H-SiC SBD and JBS Diodes","authors":"Dong-Wook Byun, M. Shin, J. Moon, W. Bahng, W. Shin, Jong‐Min Oh, Chulhwan Park, S. Koo","doi":"10.4313/JKEM.2021.34.3.214","DOIUrl":"https://doi.org/10.4313/JKEM.2021.34.3.214","url":null,"abstract":"","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84662576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.4313/JKEM.2021.34.1.8
Y. Cha, J. Kwak
{"title":"The Variation of Sapphire Substrate Shape of Micro LED Array to Increasing of Light Intensity and Contrast Ratio","authors":"Y. Cha, J. Kwak","doi":"10.4313/JKEM.2021.34.1.8","DOIUrl":"https://doi.org/10.4313/JKEM.2021.34.1.8","url":null,"abstract":"","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90295543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.4313/JKEM.2021.34.6.14
Min-seob Kim, Sang-Shik Park
{"title":"Bio-Piezoelectric Generator with Silk Fibroin Films Prepared by Dip-Coating Method","authors":"Min-seob Kim, Sang-Shik Park","doi":"10.4313/JKEM.2021.34.6.14","DOIUrl":"https://doi.org/10.4313/JKEM.2021.34.6.14","url":null,"abstract":"","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73775221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.4313/JKEM.2021.34.1.1
Sang Sub Lee, Chang-Heon Lee, T. Duong, H. Nguyen, Hyoung‒Su Han, Jae‐Shin Lee
This study investigated the structural, dielectric, ferroelectric, and strain properties of (0.98-x)Bi1/2Na1/2TiO30.02BiFeO3-xSrTiO3 (BNT-BF-100xST, x=0.20, 0.22, 0.24, 0.26, and 0.28). All samples were successfully synthesized using the conventional solid-state reaction method and sintered at 1,175°C for 2 h. The average grain size of the BNT-BF-100x ceramics decreased with increasing ST content. Furthermore, we observed that the ferroelectricrelaxor transition temperature (TF-R) decreased with increasing ST content, which eventually vanished in the BNT-BF-24ST ceramics. The results indicated that a ferroelectric to relaxor phase transition could be induced by ST modification. Consequently, a large electromechanical strain of 633 pm/V at 4 kV/mm was observed for the BNT-BF-26ST ceramics. These results imply that our materials have the competitive advantage of larger strain under lower operating field conditions compared with other BNT-based lead-free piezoelectric ceramics. We expect that BNT-BF-ST lead-free piezoelectric ceramics are promising candidates as a novel ternary BNT-based system and can find potential applications
{"title":"Ferroelectric to Relaxor Transition Behavior in Lead-Free Ternary (Bi 0.5 Na 0.5 )TiO 3 -BiFeO 3 -SrTiO 3 Piezoceramics","authors":"Sang Sub Lee, Chang-Heon Lee, T. Duong, H. Nguyen, Hyoung‒Su Han, Jae‐Shin Lee","doi":"10.4313/JKEM.2021.34.1.1","DOIUrl":"https://doi.org/10.4313/JKEM.2021.34.1.1","url":null,"abstract":"This study investigated the structural, dielectric, ferroelectric, and strain properties of (0.98-x)Bi1/2Na1/2TiO30.02BiFeO3-xSrTiO3 (BNT-BF-100xST, x=0.20, 0.22, 0.24, 0.26, and 0.28). All samples were successfully synthesized using the conventional solid-state reaction method and sintered at 1,175°C for 2 h. The average grain size of the BNT-BF-100x ceramics decreased with increasing ST content. Furthermore, we observed that the ferroelectricrelaxor transition temperature (TF-R) decreased with increasing ST content, which eventually vanished in the BNT-BF-24ST ceramics. The results indicated that a ferroelectric to relaxor phase transition could be induced by ST modification. Consequently, a large electromechanical strain of 633 pm/V at 4 kV/mm was observed for the BNT-BF-26ST ceramics. These results imply that our materials have the competitive advantage of larger strain under lower operating field conditions compared with other BNT-based lead-free piezoelectric ceramics. We expect that BNT-BF-ST lead-free piezoelectric ceramics are promising candidates as a novel ternary BNT-based system and can find potential applications","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82139870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.4313/JKEM.2021.34.1.56
Sin Young Jeon, Dongjun Kim, Jong-Yeop Kim, J. Kwon, Yong-min Jeon, Gye Ryung Do, Seong-eui Lee
{"title":"A Study on the Ozone Reduction of Plasma Devices by Catalyst Method","authors":"Sin Young Jeon, Dongjun Kim, Jong-Yeop Kim, J. Kwon, Yong-min Jeon, Gye Ryung Do, Seong-eui Lee","doi":"10.4313/JKEM.2021.34.1.56","DOIUrl":"https://doi.org/10.4313/JKEM.2021.34.1.56","url":null,"abstract":"","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88209969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.4313/JKEM.2021.34.3.149
Jae-hyeon Cho, Wook-Hyon Jo
{"title":"A Brief Review on Magnetoelectric Multiferroic Oxides","authors":"Jae-hyeon Cho, Wook-Hyon Jo","doi":"10.4313/JKEM.2021.34.3.149","DOIUrl":"https://doi.org/10.4313/JKEM.2021.34.3.149","url":null,"abstract":"","PeriodicalId":17325,"journal":{"name":"Journal of The Korean Institute of Electrical and Electronic Material Engineers","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88267158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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