Data from: Superconductivity Found in Meteorites
MFMMS
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Description | Magnetic Field Modulated Microwave Spectroscopy (MFMMS) measurements of samples from 15 meteorites. |
Scope And Content |
Contains .txt, .dta, .dsc and .xgf files. Raw data files (.txt) contain the numerical data, presented as tab-separated data. Descriptor files (.dsc) provide details about the settings used to take the associated measurement. The other two file types (.xgf and .dta) are machine output files that are not text readable (but do not contain any relevant information). |
VSM
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Description | Vibrating Sample Magnetometry (VSM) measurements of samples from two meteorites. |
Scope And Content |
Contains .dat files, .seq files, .gph files and a .xlsx file. The .dat files are data files (which also contain machine-generated metadata), the .gph files are machine-generated graph files created directly from the .dat files and the .seq files are machine-generated sequence files, detailing the sequence of measurements. |
Optical Microscope Images
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Description | Images of samples and subsamples from Mundrabilla and GRA 95205. |
Scope And Content | Contains .jpg and .tif images. For Mundrabilla, the images included are those that appear in Fig. S3 from the SI appendix of the associated paper. For Mundrabilla, the images are those of the 5 subsamples from the divide and conquer process (GRA 95205 subsamples 1-5 of subsample c of sample 1 – these are referred to as subsamples 1-5 in the paper). The .tif version of each image zooms in on the part of the image with the sample. The .jpg version of each image includes a scale bar. |
Volume Analysis
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Description | Images from an optical microscope and images generated from those using ImageJ software for the purpose of estimating sample volume. |
Scope And Content |
Contains .png and .jpg image files, .csv files generated by ImageJ analyzing images and .xlsx files containing related calculations |
Technical Details |
ImageJ Software |
SEM images and EDX data
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Description | Scanning Electron Micrsoscopy (SEM) images and Energy-Dispersive X-ray Spectroscopy (EDX) data of subsamples from Mundrabilla and GRA 95205. |
Scope And Content |
Contains a .xlsx summary of the EDX element data in all of the subsamples imaged as well as .jpg, .docx, .tnp, .emsa, .sitif, .bmp, .csi, .si, .siref, .txt, .xml, .msa and .fss files. |
TEM images and EDX data
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Description | Transmission Electron Microscopy (TEM) images and Energy-Dispersive X-ray Spectroscopy (EDX) data of a grain from subsample a from Mundrabilla. |
Scope And Content |
Contains .pptx summaries of the EDX data and .png raw TEM image files. |
SUPERCON analysis code and data
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Description | Python code used to compare Energy-Dispersive X-ray Spectroscopy (EDX) data to the entries in the SUPERCON database of superconductors. |
Scope And Content |
Contains the .py python code, a folder with data which was read in by the code and a folder with results generated by the code. |
Technical Details |
Python version: 3.6.9. |
- Collection
- Cite This Work
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Wampler, James; Thiemens, Mark; Cheng, Shaobo; Zhu, Yimei; Schuller, Ivan K. (2020). Data from: Superconductivity Found in Meteorites. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0KW5DDX
- Description
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This data details the discovery and analysis of superconducting material in two meteorites. These are the first superconducting materials found in extraterrestrial samples and the superconducting phases are characterized as alloys of lead, tin and indium.
The collection here is divided into components which consist of different analysis techniques. See the following paragraphs for a brief description of how these techniques were used together to analyze the meteorite samples.
A diverse population of meteorites was selected and powder samples were dislodged or scraped from the meteorite, for measurement in MFMMS. Superconducting candidate samples were identified in two meteorites (Mundrabilla and GRA 95205) from peaks in the Magnetic Field Modulated Microwave Spectroscopy (MFMMS) response. The grains with the most superconducting material were isolated by subdividing these samples and measuring the subsamples in the MFMMS.
These subsamples were subsequently measured with Vibrating Sample Magnetometry (VSM) to confirm that they were superconducting and images from an optical microscope were used to analyze the sample volume, which allowed an estimate of the average superconducting volume fraction in superconducting grains.
The samples were measured with EDX in an SEM. This data showed that the likely superconducting phases were alloys of indium, lead and tin. To confirm this, EDX measurements were taken in a TEM, imaging the inside of a grain that exhibited superconductivity. In addition, the EDX data from the SEM was compared to the database of superconductors, SUPERCON, to determine all of the known superconducting compounds that could be made from the elements observed using EDX. - Creation Date
- 2016 to 2019
- Date Issued
- 2020
- Authors
- Principal Investigator
- Funding
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This work was supported by the Air Force Office of Scientific Research (grant FA9550-14-1-0202); and the UCSD Chancellor's Associates (Mark Thiemens). Transmission electron microscopy work at Brookhaven National Laboratory (BNL) was supported by the U.S. Department of Energy, Office of Basic Energy Science, Division of Materials Science and Engineering, under Contract No. DE-SC0012704.
- Geographics
- Topics
- Identifier
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Identifier: Ivan K. Schuller: https://orcid.org/0000-0002-9078-7120
Identifier: Shaobo Cheng: https://orcid.org/0000-0001-8791-5315
- Related Resources
- James Wampler, Mark Thiemens, Shaobo Cheng, Yimei Zhu, Ivan K. Schuller. Superconductivity found in meteorites. Proceedings of the National Academy of Sciences Mar 2020, 201918056. https://doi.org/10.1073/pnas.1918056117
- Grossman, Jeffrey N. (1998), The Meteoritical Bulletin, No. 82, 1998 July, Meteoritics & Planetary Science 33, A221-A239. https://doi.org/10.1111/j.1945-5100.1998.tb01336.x
- Wilson, R., Cooney, A. (1967), The Mundrabilla Meteorite : a New Discovery in Western Australia, Nature 213, 274–275. https://doi.org/10.1038/213274a0
Primary associated publication
Reference
- License
-
Creative Commons Attribution 4.0 International Public License
- Rights Holder
- UC Regents
- Copyright
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Under copyright (US)
Use: This work is available from the UC San Diego Library. This digital copy of the work is intended to support research, teaching, and private study.
Constraint(s) on Use: This work is protected by the U.S. Copyright Law (Title 17, U.S.C.). Use of this work beyond that allowed by "fair use" or any license applied to this work requires written permission of the copyright holder(s). Responsibility for obtaining permissions and any use and distribution of this work rests exclusively with the user and not the UC San Diego Library. Inquiries can be made to the UC San Diego Library program having custody of the work.
- Digital Object Made Available By
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Research Data Curation Program, UC San Diego, La Jolla, 92093-0175 (https://lib.ucsd.edu/rdcp)
- Last Modified
2022-11-28