지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.1
- 수록면
- 240 - 249 (10page)
이용수
초록· 키워드
오류제보하기
Herein, the eff ect of microwave irradiation on the formation of γ-Fe 2 O 3 phase was investigated. The structural and chemicalfeatures of the γ-Fe 2 O 3 synthesized via microwave-assisted heat treatment (MWH) were examined in terms of precursors. Three diff erent types of precursors, i.e., FeC 2 O 4 ∙2H 2 O (FH), FeOOH, and Fe 3 O 4 , were used, and each precursor was heatedin a temperature range of 100–300 °C via MWH. Nanocrystalline γ-Fe 2 O 3 powders with a crystallite size of ~ 19 nm weresynthesized when the source FH was heat-treated at 120 °C for 20 min by MWH. The activation energy required for the formationof γ-Fe 2 O 3 powders was 21.4 kJ/mol, which is approximately one-third or one-quarter of the activation energy (68.5and 87.9 kJ/mol) reported for the synthesis of γ-Fe 2 O 3 via conventional heating. The lattice parameter of the synthesizedγ-Fe 2 O 3 phase expanded to 8.360 Å at 120 °C, whereas it contracted to 8.351 Å at 200 °C. This variation can be attributed tothe content of the surface-absorbed OH group. The values of the saturated magnetization and coercive force of the powdersincreased by approximately threefold with increasing crystallinity.
목차
등록된 정보가 없습니다.
참고문헌 (40)
참고문헌 신청
Jian, L. / 2009 / Solvothermal synthesis and characterization of Fe 3 O 4 and γ-Fe 2 O 3 nanoplates / J. Phys. Chem. C 113:4012~4017
Singh, K. / 2008 / Dielectric and magnetic properties of conducting ferromagnetic composite of polyaniline with and γ-Fe 2 O 3 nanoparticles / Mater. Chem. Phys 112:651~658
Park, Y. / 2011 / Transformation of hydrophobic iron oxide nanoparticles to hydrophilic and biocompatible maghemite nanocrystals for use as highly effi cient MRI contrast agent / J. Mater. Chem 21:11472~11477
Young-Woo Kim / 2019 / Microstructural and Magnetic Characterization of Iron Oxide Nanoparticles Fabricated by Pulsed Wire Evaporation / Electronic Materials Letters 15(6):665~672
Jafari, A. / 2015 / Eff ect of annealing temperature on magnetic phase transition in Fe 3 O 4nanoparticles / J. Magn. Magn. Mater 379:305~312
Singh, K. / 2008 / Dielectric and magnetic properties of conducting ferromagnetic composite of polyaniline with and γ-Fe 2 O 3 nanoparticles / Mater. Chem. Phys 112:651~658
Park, Y. / 2011 / Transformation of hydrophobic iron oxide nanoparticles to hydrophilic and biocompatible maghemite nanocrystals for use as highly effi cient MRI contrast agent / J. Mater. Chem 21:11472~11477
Young-Woo Kim / 2019 / Microstructural and Magnetic Characterization of Iron Oxide Nanoparticles Fabricated by Pulsed Wire Evaporation / Electronic Materials Letters 15(6):665~672
Jafari, A. / 2015 / Eff ect of annealing temperature on magnetic phase transition in Fe 3 O 4nanoparticles / J. Magn. Magn. Mater 379:305~312
함께 읽어보면 좋을 논문
논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!
-
전기방사 공정을 이용하여 1차원 Nd2Fe14B섬유로부터의 Nd2Fe14B 자석분말 합성
한국분말야금학회지
2019 .01
-
Photo-thermal energy conversion characteristics of Co0.5Zn0.5Fe₂O₄ nanofluid
대한설비공학회 학술발표대회논문집
2020 .06
-
Au-Fe합금 도금층의 접촉저항에 미치는 Fe함량의 영향
한국표면공학회 학술발표회 초록집
2015 .11
-
Fe₂O₃을 첨가한 Co₃O₄ 가스 센서의 특성 연구
한국정밀공학회 학술발표대회 논문집
2022 .10
-
다공성 철 분말을 이용한 열전지용 열원 적합성 연구
전기전자재료학회논문지
2022 .07
-
Application of Amorphous Nanoparticle Fe-B Magnetic Fluid in Wastewater Treatment
NANO
2019 .01
-
석탄-바이오매스 혼소발전 분위기에서 Fe-Cr-W 강의 고온부식 연구
한국표면공학회지
2019 .10
-
철 촉매를 이용한 메탄 분해를 통한 수소 생산
에너지공학
2022 .06
-
기계적합금화에 의한 Fe2O3-Mg계 연자성 콤포지트의 합성 및 평가
한국결정성장학회지
2015 .01
-
사람 발 메커니즘의 해석 및 FE 모델링
대한기계학회 춘추학술대회
2024 .11
-
Effect of Milling Time and Multiple Compactions on Magnetic and Electrical Properties of Fe/Fe₂O₂ Soft Magnetic Composites
한국기계가공학회 춘추계학술대회 논문집
2019 .10
-
Magnetic effect on thermal properties of Fe₃O₄ nanofluid
대한기계학회 춘추학술대회
2019 .05
-
A690 용착금속 미세조직에 미치는 Fe 함량의 영향
대한용접학회 특별강연 및 학술발표대회 개요집
2016 .04
-
Fe-Si 전기강판 폐스크랩을 이용한 3원계 Fe-9.8Si-6.0Al 합금의 연자성 특성
마이크로전자 및 패키징학회지
2017 .01
-
Study on Preparation and MD Simulation of Nano Fe4N
NANO
2017 .01
-
Application of a Dynamic-Nanoindentation Method to Analyze the Local Structure of an Fe-18 at.% Gd Cast Alloy
Nuclear Engineering and Technology
2017 .01
-
A690 용착금속 미세조직에 미치는 Fe 함량의 영향
대한용접학회 특별강연 및 학술발표대회 개요집
2016 .11
-
Fabrication of Fe Foam using Slurry Coating Process
자원리싸이클링
2017 .01
-
Thermoelectric transport properties of Co0.5Fe0.5Se2, Co0.5Fe0.5Te2, and their solid-solution compositions
Electronic Materials Letters
2024 .07
이 논문의 저자 정보
최근 본 자료
댓글(0)
0