A thermodynamic study of the D03-ordered intermetallic compound Fe3Al

Huang, Yongzhang; Yuan, Wenxia; Qiao, Zhiyu; Semenova, Olga; Bester, Gabriel; Ipser, Herbert

doi:10.1016/j.jallcom.2007.04.208

Cited by 7 publications

(3 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The relationship between structural and magnetic properties in Fe-based magnetic systems has been extensively studied [1e5]. It is interesting to note that the DO 3 ordering is rather easily achieved in the Fe 3 Si alloy, whereas it is extremely difficult to order Fe 3 Al alloy fully [6]. Intuitively, the two isomorphous alloys should show very similar properties.…”

Section: Introductionmentioning

confidence: 99%

Electronic structure and magnetism of Fe3Al1−xSix alloys

Jiang

Bie

et al. 2010

Intermetallics

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Electronic structure and magnetism of Fe3Al1−xSix alloys

Jiang

Bie

et al. 2010

Intermetallics

View full text Add to dashboard Cite

“…Dalam perangkat tersebut terdapat beberapa komponen yang sangat penting, salah satunya adalah elektroda. Perkembangan komputer yang berbasis layar sentuh dan usaha peningkatan efisiensi solar sel, serta pembuatan Organic Light Emmiting Diode (OLED) [1] membutuhkan elektroda transparan. Salah satu elektroda transparan yang banyak digunakan adalah Indium Tin Oxide (ITO).…”

Section: Pendahuluanunclassified

Karakteristik Transparansi Film Tipis Oksida Grafena Tereduksi (R-Go) Untuk Elektroda Transparan

Lasmana

Pranata

Nurlina

et al. 2016

JME

View full text Add to dashboard Cite

Grafena adalah material karbon dua dimensi yang mempunyai sifat optik dan listrik yang menarik sehingga memiliki banyak potensi aplikasi, diantaranya elektroda transparan. Grafena dapat diperoleh melalui proses reduksi termal dari Oksida Grafena (GO) yang dikenal sebagai Oksida Grafena Tereduksi (r-GO). Film tipis GO dibuat dari 4 mg/ml suspensi GO pada substrat quartz dengan metode spin coating. Film tersebut selanjutnya dikenakan proses reduksi secara termal melalui pemanasan dalam oven yang dialiri dengan gas nitrogen. Pengaruh proses reduksi termal terhadap transparansi dan struktur GO diukur dengan spektroskopi UV-Vis dan SEM-EDS (Scanning electron microscope-Energy Dispersive Spectroscopy). Hasil pengukuran spektrum UV-Vis menunjukkan adanya perubahan transparansi dan peningkatan absorbsi seiring dengan penambahan waktu pemanasan. Perubahan transparansi pada sampel GO yang dikenakan proses reduksi termal mencapai keadaaan saturasi setelah pemanasan sekitar 150 menit. Di lain pihak, hasil pengukuran EDS menunjukkan adanya peningkatan rasio C/O pada pada sampel GO setelah dikenakan proses reduksi termal akibat berkurangnya kadar oksigen. Pengurangan kadar oksigen tersebut mengindikasikan adanya pemulihan konjugasi pada rantai karbon sehingga meningkatkan absorbansi dan juga diharapkan dapat meningkatkan konduktivitas.

show abstract

“…Since no experimental thermodynamic data for the corresponding temperature and composition range were available in the literature, the following solid-state galvanic cell was used by Huang et al [55] for the determination of the partial thermodynamic properties of the D0 3 -phase Fe 3 Al as a function of temperature and composition (-) PtIrAl 0.85 Sn 0.15 , Na 3 AlF 6 CaF 2 Al 1±x Fe 3±x , Na 3 AlF 6 IrPt (+)…”

Section: Compound Defect Formation Energies (In Ev)mentioning

confidence: 99%

A3B Intermetallics: Defect chemistry and nonstoichiometry

Ipser

2007

Pure and Applied Chemistry

Self Cite

View full text Add to dashboard Cite

Abstract:The defect chemistry of different ordered intermetallic compounds with the A 3 B stoichiometry was investigated. Three groups were distinguished according to their crystal structure: L1 2 compounds (Ni 3 Al, Ni 3 Ga, Pt 3 Ga, Pt 3 In), D0 19 compounds (Ti 3 Al), and D0 3 compounds (Fe 3 Al, Ni 3 Sb). Statistical-thermodynamic models were derived based on a Wagner-Schottky approach, and the calculated activity curves (thermodynamic activity vs. composition) were compared with experimental activity data. In this way, we attempted to obtain at least estimated values for the energies of formation of the different types of point defects present in the corresponding compound, both as configurational defects (which are responsible for nonstoichiometry) and as thermal defects. In the majority of cases, thermodynamic activities had to be determined experimentally in the present study, using either an emf method with a solid electrolyte (Ni 3 Ga, Pt 3 Ga, Pt 3 In, Fe 3 Al) or a Knudsen cell-mass spectrometric method (Ni 3 Sb).

show abstract

A thermodynamic study of the D03-ordered intermetallic compound Fe3Al

Cited by 7 publications

References 25 publications

Electronic structure and magnetism of Fe3Al1−xSix alloys

Electronic structure and magnetism of Fe3Al1−xSix alloys

Karakteristik Transparansi Film Tipis Oksida Grafena Tereduksi (R-Go) Untuk Elektroda Transparan

A3B Intermetallics: Defect chemistry and nonstoichiometry

Contact Info

Product

Resources

About