{"title":"Impacts of growth oxygen pressure and laser fluence on microwave tunings of Ba0.8Sr0.2TiO3 thin films","authors":"Zixiong Liu, Changdong Liu, Haotian Gao, Zongquan Gu","doi":"10.1063/5.0250890","DOIUrl":null,"url":null,"abstract":"The impacts of growth oxygen pressure and laser energy in the pulsed laser deposition on the structural, chemical, and electrical properties of Ba0.8Sr0.2TiO3 ferroelectric thin films were investigated. The relative Ba: Sr: Ti ratio in the films was correlated with the capacitance C–voltage V tuning characteristics for the application of microwave tunable capacitors. An enhanced C–V tunability higher than 4:1 was obtained at 1.2 J/cm2 and 40 mTorr and the quality factor Q exhibited resonant pattern as functions of frequency (1–10 GHz) and applied electric field (0–233 kV/cm). Second-order microwave filters were derived from the interdigital capacitor covering the microwave L (1–2 GHz), S (2–4 GHz), and C (4–8 GHz) bands.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"30 1","pages":""},"PeriodicalIF":3.5000,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Physics Letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1063/5.0250890","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
The impacts of growth oxygen pressure and laser energy in the pulsed laser deposition on the structural, chemical, and electrical properties of Ba0.8Sr0.2TiO3 ferroelectric thin films were investigated. The relative Ba: Sr: Ti ratio in the films was correlated with the capacitance C–voltage V tuning characteristics for the application of microwave tunable capacitors. An enhanced C–V tunability higher than 4:1 was obtained at 1.2 J/cm2 and 40 mTorr and the quality factor Q exhibited resonant pattern as functions of frequency (1–10 GHz) and applied electric field (0–233 kV/cm). Second-order microwave filters were derived from the interdigital capacitor covering the microwave L (1–2 GHz), S (2–4 GHz), and C (4–8 GHz) bands.
期刊介绍：
Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology.
In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics.
APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field.
Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.
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