# Tl system > Tl system: 12 accepted literature values (crystal structure 9, phase transition 3) and 0 calculated phase diagram(s) from ORCHID, each value with evidence class, source, page and quote. HTML: https://data.orchid-project.org/systems/TL.html · Markdown: https://data.orchid-project.org/systems/TL.md 12 accepted literature values from 3 paper(s) (experimental 6, model 3, unspecified 3); 0 calculated phase diagram(s). Data: [JSON](https://data.orchid-project.org/literature/systems/TL.json) · [CSV](https://data.orchid-project.org/systems/TL.csv) · [interactive explorer](https://orchid-project.org/data-explorer/#TL) · [papers (bibliography)](https://data.orchid-project.org/bibliography/pages/systems/TL.html) · [Markdown](https://data.orchid-project.org/systems/TL.md) Table: Accepted values by evidence class | Evidence class | Values | |---|---:| | experimental | 6 | | model | 3 | | unspecified | 3 | Table: Accepted values by property group | Property group | Values | |---|---:| | phase transition | 3 | | crystal structure | 9 | ## Other properties ### Phase transition (3) Table: Phase transition, Tl system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Phase transition | 507 K | 507 | bcc -> hcp; _bcc: Tl 1; hcp: Tl 1_ | model | [1] Guo 2010 | Table 4, p. 5, row 31; `ORC-42EVRVXPLR.d2a8ae` | | | Phase transition | 507 K | 507 | bcc -> hcp; _bcc: Tl 1; hcp: Tl 1_ | model | [1] Guo 2010 | Table 4, p. 5, row 32; `ORC-QAB4ZQFWKC` | | | Phase transition | 507.15 K | 507.15 | polymorphic: βTl -> αTl; _βTl: Tl 1_ | model | [2] McAlister 1989 | Table I, p. 1, row 8; `ORC-DXBA7ZPWOD` | | ### Crystal structure (9) Table: Crystal structure, Tl system | Property | Value | T (K) | Phases / composition | Class | Source | Location | Quote | |---|---:|---:|---|---|---|---|---| | Lattice a | 3.4496 Å | 298.15 | (αTl); _(αTl): Tl 1_ | unspecified | [2] McAlister 1989 | Table 3, p. 2, row 3; `ORC-46YWVPKWOG.73c405` | | | Lattice a | 3.874 Å | 298.15 | (βTl); _(βTl): Tl 1_ | unspecified | [2] McAlister 1989 | Table 3, p. 2, row 2; `ORC-NOWJEGFXMB` | | | Lattice a | 345.63 not_printed | 503 (\<) | (αTl); _alloy: Tl 1_ | experimental | [3] Gierlotka 2006; _cites Amand 1978_ [doi](https://doi.org/10.1016/0022-5088%2878%2990197-2) | Table 1, p. 2, row 3; `ORC-QMZOVZVWVK.0841c5` | | | Lattice a | 547.6 not_printed | 503 (\<) | (αTl); _alloy: Tl 1_ | experimental | [3] Gierlotka 2006; _cites Amand 1978_ [doi](https://doi.org/10.1016/0022-5088%2878%2990197-2) | Table 1, p. 2, row 3; `ORC-QMZOVZVWVK.1842a4` | | | Lattice a | 378.9 not_printed | 577 (\<) | (βTl); _alloy: Tl 1_ | experimental | [3] Gierlotka 2006; _cites Amand 1978_ [doi](https://doi.org/10.1016/0022-5088%2878%2990197-2) | Table 1, p. 2, row 4; `ORC-VEAPRLYAYD.aa757e` | | | Lattice a | 387.9 not_printed | 577 (\<) | (βTl); _alloy: Tl 1_ | experimental | [3] Gierlotka 2006; _cites Amand 1978_ [doi](https://doi.org/10.1016/0022-5088%2878%2990197-2) | Table 1, p. 2, row 4; `ORC-VEAPRLYAYD.fca033` | | | Lattice c | 5.5137 Å | 298.15 | (αTl); _(αTl): Tl 1_ | unspecified | [2] McAlister 1989 | Table 3, p. 2, row 3; `ORC-46YWVPKWOG.e82d04` | | | Lattice c | 552.6 not_printed | 503 (\<) | (αTl); _alloy: Tl 1_ | experimental | [3] Gierlotka 2006; _cites Amand 1978_ [doi](https://doi.org/10.1016/0022-5088%2878%2990197-2) | Table 1, p. 2, row 3; `ORC-QMZOVZVWVK.2be8bd` | | | Lattice c | 342.5 not_printed | 503 (\<) | (αTl); _alloy: Tl 1_ | experimental | [3] Gierlotka 2006; _cites Amand 1978_ [doi](https://doi.org/10.1016/0022-5088%2878%2990197-2) | Table 1, p. 2, row 3; `ORC-QMZOVZVWVK.49d823` | | ## Sources Reporting papers the values were read from (a value cited from another work names that work in its row). 1. Cuiping Guo, Changrong Li, Zhenmin Du, A thermodynamic modeling of the Gd–Tl system, Journal of Alloys and Compounds 492, 122-127 (2010). [doi:10.1016/j.jallcom.2009.11.101](https://doi.org/10.1016/j.jallcom.2009.11.101) 2. A. J. McAlister, The Al-Tl (Aluminum-Thallium) system, Bulletin of Alloy Phase Diagrams 10, 112-114 (1989). [doi:10.1007/bf02881414](https://doi.org/10.1007/bf02881414) 3. W. Gierlotka, J. Sopousek, K. Fitzner, Thermodynamic assessment of the Hg–Tl system, Calphad 30, 425-430 (2006). [doi:10.1016/j.calphad.2006.07.006](https://doi.org/10.1016/j.calphad.2006.07.006) ## Please cite - R. Arróyave, J. Saal, D. Shin, ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23735569 - R. Arróyave, J. Saal, D. Shin, ORCHID data: umbrella record of the ORCHID datasets (version 2026.10; Version 1, machine-extracted), Zenodo (2026). https://doi.org/10.5281/zenodo.23736065 Also cite the original source of every value you use (paper_citation / paper_doi, and cited_dois for values the paper cites from earlier work); B. Hallstedt, The SGTE collection of binary datasets, Calphad 89 (2025) 102833, https://doi.org/10.1016/j.calphad.2025.102833 (CC BY 4.0), and the original assessment named in each file; A. Jain et al., The Materials Project: A materials genome approach to accelerating materials innovation, APL Materials 1 (2013) 011002, https://doi.org/10.1063/1.4812323 (CC BY 4.0); J. E. Saal et al., JOM 65 (2013) 1501, https://doi.org/10.1007/s11837-013-0755-4 and S. Kirklin et al., npj Comput. Mater. 1 (2015) 15010, https://doi.org/10.1038/npjcompumats.2015.10 (CC BY 4.0). Version 1, machine-extracted: values were read by language-model readers constrained to quote their source and checked automatically, and the release was then audited on the printed pages by adversarial audits, an independent second review of fit-facing records and a preliminary human review of a frozen sample. Flags such as accepted and ESPEI-ready record screening results, not certification; known issues are listed in the release notes. ```bibtex @misc{orchid_literature_2026, author = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon}, title = {{ORCHID-Values: thermodynamic and phase-equilibrium values read from the literature}}, version = {2026.10}, publisher = {Zenodo}, year = {2026}, doi = {10.5281/zenodo.23735569}, url = {https://doi.org/10.5281/zenodo.23735569}, note = {Version 1, machine-extracted} } @misc{orchid_data_2026, author = {Arr{\'o}yave, Raymundo and Saal, James and Shin, Dongwon}, title = {{ORCHID data: umbrella record of the ORCHID datasets}}, version = {2026.10}, publisher = {Zenodo}, year = {2026}, doi = {10.5281/zenodo.23736065}, url = {https://doi.org/10.5281/zenodo.23736065}, note = {Version 1, machine-extracted} } ``` --- Derived data CC BY 4.0 ([licence](https://creativecommons.org/licenses/by/4.0/)): cite ORCHID ([CITATION.cff](https://data.orchid-project.org/CITATION.cff)) and the original sources. Quotes are short excerpts kept so that each value can be checked; they remain under the publishers' copyright and are not relicensed. Source papers, page images and full text are not redistributed. Field reference: [SCHEMA.md](https://data.orchid-project.org/literature/SCHEMA.md). Machine-readable guide: [llms.txt](https://data.orchid-project.org/llms.txt). Found an error? The report link of a value (Markdown: its id, ORC-..., in the Location column) opens a pre-filled GitHub issue, https://github.com/orchid-calphad/orchid-data/issues/new?template=report-value-error.yml&record_id=\, carrying only the record id, source and value; [how to contribute](https://orchid-project.org/contribute/).