S. Amdouni , Mansour Aouassa , Mohammed Bouabdellaoui , A.K. Abdullah , M. Yahyaoui
{"title":"铁磁性锰锗纳米晶体在纳米图案绝缘层上的 MBE 生长和有序化","authors":"S. Amdouni , Mansour Aouassa , Mohammed Bouabdellaoui , A.K. Abdullah , M. Yahyaoui","doi":"10.1016/j.physb.2024.416764","DOIUrl":null,"url":null,"abstract":"<div><div>This paper presents a novel methodology for growing highly ordered arrays of self-assembled manganese-germanium (MnGe) nanocrystals (NCs) on an insulating SiO₂ layer. This approach utilizes solid-state dewetting of thin MnGe films, deposited by molecular beam epitaxy (MBE), onto a nanopatterned SiO₂ surface created via electron beam lithography (EBL). Detailed analysis of morphology, structure, and magnetic properties reveals key attributes of these MnGe NCs: a Curie temperature exceeding room temperature (325 K), high purity, defined shape and crystalline structure, high density, and a remarkably narrow size distribution. Moreover, these NCs exhibit precise and tunable ordering based on the specific patterns etched into the SiO₂ surface, showcasing the effectiveness of combining surface nanostructuring with solid-state dewetting of MnGe layers. These results represent a significant advancement in magnetic semiconductor nanocrystal growth, with promising implications for applications in spintronic and optoelectronic devices.</div></div>","PeriodicalId":20116,"journal":{"name":"Physica B-condensed Matter","volume":"698 ","pages":"Article 416764"},"PeriodicalIF":2.8000,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"MBE growth and ordering of ferromagnetic MnGe nanocrystals on a nanopatterned insulating layer\",\"authors\":\"S. Amdouni , Mansour Aouassa , Mohammed Bouabdellaoui , A.K. Abdullah , M. Yahyaoui\",\"doi\":\"10.1016/j.physb.2024.416764\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This paper presents a novel methodology for growing highly ordered arrays of self-assembled manganese-germanium (MnGe) nanocrystals (NCs) on an insulating SiO₂ layer. This approach utilizes solid-state dewetting of thin MnGe films, deposited by molecular beam epitaxy (MBE), onto a nanopatterned SiO₂ surface created via electron beam lithography (EBL). Detailed analysis of morphology, structure, and magnetic properties reveals key attributes of these MnGe NCs: a Curie temperature exceeding room temperature (325 K), high purity, defined shape and crystalline structure, high density, and a remarkably narrow size distribution. Moreover, these NCs exhibit precise and tunable ordering based on the specific patterns etched into the SiO₂ surface, showcasing the effectiveness of combining surface nanostructuring with solid-state dewetting of MnGe layers. These results represent a significant advancement in magnetic semiconductor nanocrystal growth, with promising implications for applications in spintronic and optoelectronic devices.</div></div>\",\"PeriodicalId\":20116,\"journal\":{\"name\":\"Physica B-condensed Matter\",\"volume\":\"698 \",\"pages\":\"Article 416764\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2024-11-22\",\"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/S0921452624011050\",\"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/S0921452624011050","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}
MBE growth and ordering of ferromagnetic MnGe nanocrystals on a nanopatterned insulating layer
This paper presents a novel methodology for growing highly ordered arrays of self-assembled manganese-germanium (MnGe) nanocrystals (NCs) on an insulating SiO₂ layer. This approach utilizes solid-state dewetting of thin MnGe films, deposited by molecular beam epitaxy (MBE), onto a nanopatterned SiO₂ surface created via electron beam lithography (EBL). Detailed analysis of morphology, structure, and magnetic properties reveals key attributes of these MnGe NCs: a Curie temperature exceeding room temperature (325 K), high purity, defined shape and crystalline structure, high density, and a remarkably narrow size distribution. Moreover, these NCs exhibit precise and tunable ordering based on the specific patterns etched into the SiO₂ surface, showcasing the effectiveness of combining surface nanostructuring with solid-state dewetting of MnGe layers. These results represent a significant advancement in magnetic semiconductor nanocrystal growth, with promising implications for applications in spintronic and optoelectronic 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