Stable and metastable iron silicide phases on Si(100)

Dézsi, I.; Fetzer, Cs.; Szücs, I. S.; Dekoster, J; Vantomme, André; Caymax, Matty

doi:10.1016/j.susc.2005.09.040

Cited by 15 publications

(6 citation statements)

References 24 publications

(25 reference statements)

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“…Metastable phases exist of a wide variety of transition metal silicides [18,19] , but the SAED data in Figure 2 shows no evidence of the lowest-Si-content cobalt silicide, CoSi 2 , which has the fluorite crystal structure and would be easily distinguished from diamond cubic. There is also no polycrystalline material signal in the diffraction data, which implies that the entire breakdown region is monocrystalline; amorphous material is not expected to form during PLM in this interfacial-velocity regime due to explosive-crystallization effects [20] , and no evidence has ever been seen of amorphous ultrafast cellular-breakdown material (including in channeling Rutherford Backscattering measurements [21] and in UV Raman [22] analysis of similar materials).…”

Section: A Novel Inhomogeneous Alloymentioning

confidence: 99%

Single‐Phase Filamentary Cellular Breakdown Via Laser‐Induced Solute Segregation

Akey

Recht

Williams

et al. 2015

Adv Funct Materials

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Nanosecond melting and quenching of materials offers a pathway to novel structures with unusual properties. Impurity-rich silicon processed using nanosecond-pulsed-laser-melting is known to produce nanoscale features in a process referred to as "cellular breakdown" due to destabilization of the planar liquid/solid interface. Here, we apply atom probe tomography combined with electron microscopy to show that the morphology of cellular breakdown in these materials is significantly more complex than previously documented. We observe breakdown into a complex, branching filamentary structure topped by a few nm of a cell-like layer. Singlephase diamond cubic silicon highly supersaturated with at least 10% atomic Co and no detectable silicides is reported within these filaments. In addition, the unprecedented spatio-chemical accuracy of the atom probe allows us to investigate nanosecond formation dynamics of this 2 complex material. Previously-reported properties of these materials can now be reconsidered in light of their true composition, and this class of inhomogeneous metastable alloys in silicon can be explored with confidence.

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Section: A Novel Inhomogeneous Alloymentioning

confidence: 99%

Single‐Phase Filamentary Cellular Breakdown Via Laser‐Induced Solute Segregation

Akey

Recht

Williams

et al. 2015

Adv Funct Materials

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“…There are two different stable iron silicide phases at room temperature, 31 α‐FeSi and β‐FeSi 2 , both of which have very good mechanical properties with microhardness around 900 HV and 574 HV, 32 respectively. In this study, we successfully generated micro‐sized Fe–Si intermetallic phases by liquid metallurgy for the first time.…”

Section: Resultsmentioning

confidence: 99%

Experimental study on novel biodegradable Zn–Fe–Si alloys

et al. 2022

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Bioabsorbable metals are increasingly attracting attention for their potential use as materials for degradable implant devices. Zinc (Zn) alloys have shown great promises due to their good biocompatibility and favorable degradation rate. However, it has been difficult to maintain an appropriate balance among strength, ductility, biocompatibility, and corrosion rate for Zn alloys historically. In this study, the microstructure, chemical composition, mechanical properties, biocompatibility, and corrosion rate of a new ternary zinc−iron–silicon (Zn–Fe–Si) alloy system was studied as a novel material for potential biodegradable implant applications. The results demonstrated that the in situ formed Fe–Si intermetallic phases enhanced the mechanical strength of the material while maintaining a favorable ductility. With Fe–Si reinforcements, the microhardness of the Zn alloys was enhanced by up to 43%. The tensile strength was increased by up to 76% while elongation to failure remained above 30%. Indirect cytotoxicity testing showed the Zn‐Fe‐Si system had good biocompatibility. Immersion testing revealed the corrosion rate of Zn–Fe–Si system was not statistically different from pure Zn. To understand the underlying phase formation mechanism, the reaction process in this ternary system during the processing was also studied via phase evolution and Gibbs free energy analysis. The results suggest the Zn–Fe–Si ternary system is a promising new material for bioabsorbable metallic medical devices.

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“…У групі метал-напівпровідник велику увагу приділяють системі метал-Si. Спо-луки даної системи мають унікальні фізичні властивості [15,16], що потенційно практично застосовуватимуться в оптоелектрон-них світловипромінювальних пристроях, інфрачервоних детекто-рах та пристроях перетворення сонячної енергії [17]. Система ме-тал-Si також є інтересною завдяки можливостям інжекції спін-поляризованих електронів в напівпровідниковий шар, що відк-риває нові можливості для пристроїв спінтроніки.…”

Section: вступunclassified

“…Острівці починають з'єднуватись один з одним так, що починається ріст другого шару, внаслідок цього знову збільшується густина адатомів [25,31]. Для дослідження морфо-логії металічних наноструктур, зазвичай, використовують методи просвітлювальної та сканувальної електронної й зондової мікрос-копій (атомно-силової мікроскопії, тунельної мікроскопії тощо) [15,32].…”

Section: вплив параметрів нанесення на ріст металічних поверхоньunclassified

Fabrication and Physical Properties of Mono- and Multilayer Metallic Nanostructures

et al. 2017

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Аналіза літературних даних показує, що вивчення поверхнево нанесе-них металевих наноструктур є актуальною проблемою фізики поверхні. Кінцева структура тонких плівок залежить від значної кількости пара-метрів і чинників, таких як відмінності постійних ґратниць і коефіціє-нтів термічного розширення речовини, що наноситься, та підложжя, що, в свою чергу, приводить до виникнення внутрішніх напружень і подальшої де´радації плівки. В процесі формування моно-та багатоша-рових структур вагоме місце займають такі параметри, як температура та структура підложжя, швидкість осадження, фраґментація наноклас-терів, характеристика змочування, час нанесення, віддаль від кювети до зразку, тиск у камері та температура розтопу в кюветі. Цілеспрямо-ване керування цими параметрами уможливлює прогнозувати та ство-рювати поверхневі структури з необхідним набором фізико-хемічних властивостей.Analysis of the literature data shows that the study of surface-deposited metallic nanostructures is an actual problem of surface physics. The final structure of thin films depends on a large number of parameters and factors such as the differences between the unit-cells' sizes as well as between the coefficients of a thermal expansion of a deposited substance and substrate that leads to internal stresses and a subsequent degradation of film. Many parameters such as temperature and a substrate structure, a deposition rate, fragmentation of nanoclusters, wetting parameters, time of application, dish-sample distance, pressure in a chamber, and temperature of melt in a dish can play an important role during the mono-and multilayer structures' formation. The goal-directed control of these parameters allows prediction and fabrication of surface structures with a required set of the physical and chemical properties. Анализ литературных данных показывает, что изучение поверхностноУспехи физ. мет. / Usp. Fiz. Met. 2017, т. 3, сс. 235-263 DOI: https://doi.org/10.15407/ufm.18.03.235 Îòòèñêè äîñòóïíû íåïîñðåäñòâåííî îò èçäàòåëÿ Ôîòîêîïèðîâàíèå ðàçðåøåíî òîëüêî â ñîîòâåòñòâèè ñ ëèöåíçèåé 2017 ÈÌÔ (Èíñòèòóò ìåòàëëîôèçèêè èì. Ã. Â. Êóðäþìîâà ÍÀÍ Óêðàèíû) Íàïå÷àòàíî â Óêðàèíå.

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Stable and metastable iron silicide phases on Si(100)

Cited by 15 publications

References 24 publications

Single‐Phase Filamentary Cellular Breakdown Via Laser‐Induced Solute Segregation

Single‐Phase Filamentary Cellular Breakdown Via Laser‐Induced Solute Segregation

Experimental study on novel biodegradable Zn–Fe–Si alloys

Fabrication and Physical Properties of Mono- and Multilayer Metallic Nanostructures

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