A study of purple plague and its role in integrated circuits

Selikson, B.; Longo, T.A.

doi:10.1109/proc.1964.3459

Cited by 32 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A number of research groups determined that the presence of silicon accelerates the formation of AuAl 2 at the expense of other intermetallics such as Au 2 Al and Au 4 Al. This process incidentally results in an electrical and mechanical degradation at the Au−Al junction, sometimes referred to as the “purple plague” due to the violet color of AuAl 2 . Similar behavior appears to be at work when gold and silicon are combined with a rare earth or an actinide in liquid aluminum.…”

Section: Resultsmentioning

confidence: 99%

“…Gold wire−aluminum film connections are often found in semiconductor products, for instance. Studies of the binary intermetallics formed at these junctions have been crucial in optimizing the behavior of these components. , To facilitate the possible uses of rare earth aluminides and silicides in such applications, it is therefore relevant to investigate the behavior of gold in multinary intermetallic systems. In this work, the combination of gold, silicon, and thorium (or ThO 2 ) in molten aluminum produced three quaternary intermetallic compounds with new and interrelated structures.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Quaternary Intermetallics Grown from Molten Aluminum: The Homologous Series Th₂(Au_xSi₁_-_x)[AuAl₂]_nSi₂(n= 1, 2, 4)

et al. 2002

View full text Add to dashboard Cite

An appropriate combination of Th or ThO2 with Au and Si in liquid aluminum has resulted in the formation of three new quaternary intermetallic compounds. All three materials grow as large platelike crystals and have structure types that define a new homologous series. Th2AuAl2Si3 is tetragonal, I41 /amd, with unit cell parameters a = 4.2119(4) Å and c = 36.165(5) Å. Th2Au3Al4Si2 and Th2Au5Al8Si2 both crystallize in the orthorhombic space group Cmmm, with cell parameters a = 4.266(1) Å, b = 23.574(8) Å, and c = 4.249(1) Å and a = 4.2612(8) Å, b = 35.661(7) Å, and c = 4.2487(8) Å, respectively. The Th2(Au x Si1 - x )[AuAl2] n Si2 structures feature planes of parallel infinite zigzag silicon chains alternating with slabs of antifluorite type AuAl2. The AuAl2 slabs increase in thickness going from Th2AuAl2Si3 (n = 1) to Th2Au5Al8Si2 (n = 4). All three materials show temperature independent Pauli paramagnetism and metallic conductivity. Band structure calculations were carried out on each compound using density functional theory (full potential LAPW method), and the details of the density of states have been correlated with the observed data.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quaternary Intermetallics Grown from Molten Aluminum: The Homologous Series Th₂(Au_xSi₁_-_x)[AuAl₂]_nSi₂(n= 1, 2, 4)

et al. 2002

View full text Add to dashboard Cite

show abstract

“…The second bake is limited to a shorter time to prevent the accumulation of Al-Au intermetallics at the site of our wirebonds (i.e. purple plague) [13], [25], [26]. As the final step, we fire the TSP every 32 hours until the pressure as measured on the ion gauge does not improve at all with further firings of the TSP, usually after 5-7 days.…”

Section: B Hydrogen Mitigationmentioning

confidence: 99%

Engineering the Quantum Scientific Computing Open User Testbed

Clark

Lobser

Revelle

et al. 2021

IEEE Trans. Quantum Eng.

View full text Add to dashboard Cite

The Quantum Scientific Computing Open User Testbed (QSCOUT) at Sandia National Laboratories is a trapped-ion qubit system designed to evaluate the potential of near-term quantum hardware in scientific computing applications for the US Department of Energy (DOE) and its Advanced Scientific Computing Research (ASCR) program. Similar to commercially available platforms, it offers quantum hardware that researchers can use to perform quantum algorithms, investigate noise properties unique to quantum systems, and test novel ideas that will be useful for larger and more powerful systems in the future. However, unlike most other quantum computing testbeds, QSCOUT allows both quantum circuit and low-level pulse control access to study new modes of programming and optimization. The purpose of this manuscript is to provide users and the general community with details of the QSCOUT hardware and its interface, enabling them to take maximum advantage of its capabilities.

show abstract

“…The second bake is limited to a shorter time to prevent the accumulation of Al-Au intermetallics at the site of our wirebonds (i.e. purple plague) [11,21,22]. As the final step, we fire the TSP every 32 hours until the pressure as measured on the ion gauge does not improve at all with further firings of the TSP, usually after 5-7 days.…”

Section: B Hydrogen Mitigationmentioning

confidence: 99%

Engineering the Quantum Scientific Computing Open User Testbed (QSCOUT): Design details and user guide

Clark,

Lobser,

Revelle

et al. 2021

Preprint

View full text Add to dashboard Cite

A study of purple plague and its role in integrated circuits

Cited by 32 publications

References 0 publications

Quaternary Intermetallics Grown from Molten Aluminum: The Homologous Series Th₂(Au_xSi₁_-_x)[AuAl₂]_nSi₂(n= 1, 2, 4)

Quaternary Intermetallics Grown from Molten Aluminum: The Homologous Series Th₂(Au_xSi₁_-_x)[AuAl₂]_nSi₂(n= 1, 2, 4)

Engineering the Quantum Scientific Computing Open User Testbed

Engineering the Quantum Scientific Computing Open User Testbed (QSCOUT): Design details and user guide

Contact Info

Product

Resources

About

A study of purple plague and its role in integrated circuits

Cited by 32 publications

References 0 publications

Quaternary Intermetallics Grown from Molten Aluminum: The Homologous Series Th2(AuxSi1-x)[AuAl2]nSi2(n= 1, 2, 4)

Quaternary Intermetallics Grown from Molten Aluminum: The Homologous Series Th2(AuxSi1-x)[AuAl2]nSi2(n= 1, 2, 4)

Engineering the Quantum Scientific Computing Open User Testbed

Engineering the Quantum Scientific Computing Open User Testbed (QSCOUT): Design details and user guide

Contact Info

Product

Resources

About

Quaternary Intermetallics Grown from Molten Aluminum: The Homologous Series Th₂(Au_xSi₁_-_x)[AuAl₂]_nSi₂(n= 1, 2, 4)

Quaternary Intermetallics Grown from Molten Aluminum: The Homologous Series Th₂(Au_xSi₁_-_x)[AuAl₂]_nSi₂(n= 1, 2, 4)