{"doi":"10.1154/1.2104535","title":"Crystallochemistry and structural studies of two newly CaSb\n                    <sub>0.50</sub>\n                    Fe\n                    <sub>1.50</sub>\n                    (PO\n                    <sub>4</sub>\n                    )\n                    <sub>3</sub>\n                    and Ca\n                    <sub>0.50</sub>\n                    SbFe(PO\n                    <sub>4</sub>\n                    )\n                    <sub>3</sub>\n                    Nasicon phases","abstract":"<jats:p>\n                    Crystallographic structures of two new orthophosphates Ca\n                    <jats:sub>0.50</jats:sub>\n                    SbFe(PO\n                    <jats:sub>4</jats:sub>\n                    )\n                    <jats:sub>3</jats:sub>\n                    and CaSb\n                    <jats:sub>0.50</jats:sub>\n                    Fe\n                    <jats:sub>1.50</jats:sub>\n                    (PO\n                    <jats:sub>4</jats:sub>\n                    )\n                    <jats:sub>3</jats:sub>\n                    obtained by conventional solid state reaction techniques at 900 °C, were determined at room temperature from X-ray powder diffraction using Rietveld analysis. The two compounds belong to the Nasicon structural family. The space group is\n                    <jats:italic>R</jats:italic>\n                    <jats:overline>3</jats:overline>\n                    for Ca\n                    <jats:sub>0.50</jats:sub>\n                    SbFe(PO\n                    <jats:sub>4</jats:sub>\n                    )\n                    <jats:sub>3</jats:sub>\n                    and\n                    <jats:italic>R</jats:italic>\n                    <jats:overline>3</jats:overline>\n                    <jats:italic>c</jats:italic>\n                    for CaSb\n                    <jats:sub>0.50</jats:sub>\n                    Fe\n                    <jats:sub>1.50</jats:sub>\n                    (PO\n                    <jats:sub>4</jats:sub>\n                    )\n                    <jats:sub>3</jats:sub>\n                    . Hexagonal cell parameters for Ca\n                    <jats:sub>0.50</jats:sub>\n                    SbFe(PO\n                    <jats:sub>4</jats:sub>\n                    )\n                    <jats:sub>3</jats:sub>\n                    and CaSb\n                    <jats:sub>0.50</jats:sub>\n                    Fe\n                    <jats:sub>1.50</jats:sub>\n                    (PO\n                    <jats:sub>4</jats:sub>\n                    )\n                    <jats:sub>3</jats:sub>\n                    are:\n                    <jats:italic>a</jats:italic>\n                    =8.257(1) Å,\n                    <jats:italic>c</jats:italic>\n                    =22.276(2) Å, and\n                    <jats:italic>a</jats:italic>\n                    =8.514(1) Å,\n                    <jats:italic>c</jats:italic>\n                    =21.871(2) Å, respectively. Ca\n                    <jats:sup>2+</jats:sup>\n                    and vacancies in {[Ca\n                    <jats:sub>0.50</jats:sub>\n                    ]\n                    <jats:sub>3a</jats:sub>\n                    [◻\n                    <jats:sub>0.50</jats:sub>\n                    ]\n                    <jats:sub>3b</jats:sub>\n                    }\n                    <jats:sub>M1</jats:sub>\n                    SbFe(PO\n                    <jats:sub>4</jats:sub>\n                    )\n                    <jats:sub>3</jats:sub>\n                    are ordered within the two positions, 3a and 3b, of M1 sites. Structure refinements show also a quasi-ordered distribution of Sb\n                    <jats:sup>5+</jats:sup>\n                    and Fe\n                    <jats:sup>3+</jats:sup>\n                    ions within the Nasicon framework. Thus, in {[Ca\n                    <jats:sub>0.50</jats:sub>\n                    ]\n                    <jats:sub>3a</jats:sub>\n                    [◻\n                    <jats:sub>0.50</jats:sub>\n                    ]\n                    <jats:sub>3b</jats:sub>\n                    }\n                    <jats:sub>M1</jats:sub>\n                    SbFe(PO\n                    <jats:sub>4</jats:sub>\n                    )\n                    <jats:sub>3</jats:sub>\n                    , each Ca\n                    <jats:sub>(3a)</jats:sub>\n                    O\n                    <jats:sub>6</jats:sub>\n                    octahedron shares two faces with two Fe\n                    <jats:sup>3+</jats:sup>\n                    O\n                    <jats:sub>6</jats:sub>\n                    octahedra and each vacancy (◻\n                    <jats:sub>(3b)</jats:sub>\n                    O\n                    <jats:sub>6</jats:sub>\n                    ) site is located between two Sb\n                    <jats:sup>5+</jats:sup>\n                    O\n                    <jats:sub>6</jats:sub>\n                    octahedra. In [Ca]\n                    <jats:sub>M1</jats:sub>\n                    Sb\n                    <jats:sub>0.50</jats:sub>\n                    Fe\n                    <jats:sub>1.50</jats:sub>\n                    (PO\n                    <jats:sub>4</jats:sub>\n                    )\n                    <jats:sub>3</jats:sub>\n                    compound (\n                    <jats:italic>R</jats:italic>\n                    <jats:overline>3</jats:overline>\n                    <jats:italic>c</jats:italic>\n                    space group), all M1 sites are occupied by Ca\n                    <jats:sup>2+</jats:sup>\n                    and the Sb\n                    <jats:sup>5+</jats:sup>\n                    and Fe\n                    <jats:sup>3+</jats:sup>\n                    ions are randomly distributed within the Nasicon framework.\n                  </jats:p>","journal":"Powder Diffraction","year":2006,"id":30428,"datarank":0.55887593957692,"base_score":2.5649493574615367,"endowment":2.5649493574615367,"self_citation_contribution":0.38474240361923057,"citation_network_contribution":0.17413353595768938,"self_endowment_contribution":0.38474240361923057,"citer_contribution":0.17413353595768938,"corpus_percentile":null,"corpus_rank":null,"citation_count":12,"citer_count":3,"citers_with_citation_signal":3,"citers_with_endowment":3,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":165292,"name":"My Rachid Tigha","orcid":null,"position":1,"is_corresponding":false},{"id":165294,"name":"Rabia Hassine","orcid":null,"position":2,"is_corresponding":false},{"id":165296,"name":"Ismael Saadoune","orcid":null,"position":3,"is_corresponding":false},{"id":155665,"name":"Abderrahim Aatiq","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"base_score":2.5649493574615367,"endowment":2.5649493574615367,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"24523987","pmcid":null,"openalex_id":"https://openalex.org/W2321930598","authors":[],"funders":[],"total_grants":0,"fwci":0.6418,"citation_percentile":0.70196371,"influential_citations":0,"citation_trend":[{"year":2013,"count":3},{"year":2016,"count":1},{"year":2017,"count":1},{"year":2019,"count":1}],"oa_status":"closed","license":"https://www.cambridge.org/core/terms","oa_locations":[{"url":"https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0885715600003201","host_type":"publisher"},{"url":"https://doi.org/10.1154/1.2104535","host_type":"journal"}],"fields_of_study":["Nuclear materials and radiation effects","Crystal Structures and Properties","Ferroelectric and Piezoelectric Materials","Chemistry","Materials Science"],"mesh_terms":[],"keywords":["Octahedron","Crystallography","Rietveld refinement","Fast ion conductor","Crystal structure","Space group","Materials science","Ion","Hexagonal crystal system","Chemistry","X-ray crystallography","Diffraction","Physics","Physical chemistry"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-06-09T02:30:52.326599Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}