Essentially every published review paper on the MAX phases includes Sc2InC in its listings of 'known MAX phases'. However, most of these reviews either: 1) specifically do not reference Sc2InC, while all other phases are referenced, or 2) point the reader in the direction of an earlier review paper.
This paper-trail can be tracked back to the seemingly original source - L. E. Toth, W. Jeitschko and C. M. Yen, The superconducting behavior of several complex carbides and nitrides, Journal of the Less-Common Metals, 10 (1966) 29-32. However this source refers only to Sc2InC as a "personal communication" between W. Jeitschko and E. Parthe. As far as I am aware there are no further reports on the physical synthesis of this phase.
Does anybody know if the origins of this phase go back any further, what the personal communication entailed, or if a publication or any other report has in fact been published regarding this phase which has slipped through my review of the literature?
Thank you in advance.
Dear Dr. Peter Richardson,
I suggest you to have a look at the following, interesting papers:
- PredictedMAX phase Sc2InC: Dynamical stability,vibrational and optical properties
A.Chowdhury, M. A. Ali, M. M. Hossain, M. M. Uddin, S. H. Naqib, A. K. M. A. Islam
Physica Status Solidi, 255, 3 (2018)
Available on RG at: ttps://www.researchgate.net/profile/S_Naqib/publication/317061779_Predicted_MAX_Phase_Sc2InC_Dynamical_Stability_Vibrational_and_Optical_Properties/links/59455330a6fdccb93abbbc36/Predicted-MAX-Phase-Sc2InC-Dynamical-Stability-Vibrational-and-Optical-Properties.pdf
-Theoretical stability and materials synthesis of a chemically ordered MAX phase, Mo2ScAlC2, and its two-dimensional derivate Mo2ScC2 MXene
Rahele Meshkian, Quanzheng Tao, Martin Dahlqvist, Jun Lu, Lars Hultman, and Johanna Rosen
Acta Materialia, 125, pp.476-480 (2017)
Available at: http://www.diva-portal.org/smash/get/diva2:1087958/FULLTEXT01.pdf
Best regards, Pierluigi Traverso.
Dear Pierluigi Traverso,
Thank you for your response!
Yes, I have read the two publications before and they seem to be well aligned with my thoughts that the compound probably has not been successfully synthesized before.
More generally, I was wondering why the compound has somewhat become an accepted member of the MAX phase family, considering the lack of published evidence for its physical existence.
Perhaps we may never know.
All the best,
Peter Richardson
In the 1967 article you have cited, Sc2InC was included in a table as a personal communication. If it is written "Parthé and Jeitschko, personal communication", it does not imply that these people have commucated with each other but they have communicated with the authors of the 1967 article that Sc2InC would exist. This 1967 article was coauthored by Jeitschko. So one of the coauthors was very close to the source! Parthé and Jeitschko have cooperated for a couple of years. It is not unlikely that this material is the unpublished stuff nearly everyone of some age has in his files, and which may not ever be published properly for a number of possible good or poor reasons (limited data quality although the producer of the results is convinced, other priorities in publishing, some contradictions....). Later publications (see previous speaker) report that theoretical investigations show that Sc2InC is a reasonable compound, so theory does not contradict the report by Jeitschko that such a phase would exist.
The 1967 paper of course not "real" literature for Sc2InC, but in my opinion it is also not wrong to mention it, as long as it has not been made unlikely by some method, that Sc2InC exist. But it is not a good proof. It is some hint....
You may also dig for the Nowotny review form the earlier "A review of these compounds is given by H. NOWOTNY, W. JEITSCHKO AND F. BENESOVSKY, Planseeber. Pulvermet., 12 (1964) 3 I. " It may or may not contain more info about Sc2InC, if that was already available that time.
Nowotny, Parthé and Jeitschko all were Austrians and THEY KNEW what they were doing on their field.
By the way: Parthé has passed away more than 10 years ago, Jeitschko only last week.
Best solution to the problem: you prepare Sc2InC by yourself and publish it properly, mentioning this 1967 paper.
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