Retention of a Paramagnetic Ground State at Low Temperatures in a Family of Structurally Related U IV Phosphates

Felder, Justin B.; Calder, Stuart; zur Loye, Hans-Conrad

doi:10.1021/acs.inorgchem.8b01284

Title: Retention of a Paramagnetic Ground State at Low Temperatures in a Family of Structurally Related U ^IV Phosphates

Journal Article · Tue Jul 17 00:00:00 EDT 2018 · Inorganic Chemistry

DOI:https://doi.org/10.1021/acs.inorgchem.8b01284· OSTI ID:1605381

Felder, Justin B. ^[1]; Calder, Stuart ^[2];

^[1]

Univ. of South Carolina, Columbia, SC (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

A new uranium fluoride phosphate, UFPO4, was synthesized via a mild hydrothermal route and characterized optically, thermally, and magnetically. Two thermal transformation products, U₂O(PO₄)₂ and U^IVU^VIO₂(PO₄)₂, were discovered to be structurally related, and were subsequently synthesized for bulk property measurements. All three materials failed to follow Curie–Weiss behavior at low temperatures, attributed to the nearly ubiquitous singlet ground state of U(IV), transitioning into a Curie–Weiss paramagnetic regime at high temperatures. Neutron diffraction experiments were performed on UFPO₄ and U^IVU^VIO₂(PO₄)₂ in order to characterize this unusual magnetic behavior.

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Research Organization:: Univ. of South Carolina, Columbia, SC (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0018739; SC0008664; AC05-00OR22725

OSTI ID:: 1605381

Alternate ID(s):: OSTI ID: 1486926

Journal Information:: Inorganic Chemistry, Vol. 57, Issue 15; ISSN 0020-1669

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 6 works

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Unique 3D framework formed by adding MIIO4 groups into high Sb/P ratio phosphatoantimonates Zhang, Wei-Long; Guo, Zhen-Gang; Guan, Xiang-Feng Zeitschrift für Kristallographie - Crystalline Materials, Vol. 234, Issue 5 https://doi.org/10.1515/zkri-2018-2137	journal	May 2019

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Title: Retention of a Paramagnetic Ground State at Low Temperatures in a Family of Structurally Related U IV Phosphates

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Title: Retention of a Paramagnetic Ground State at Low Temperatures in a Family of Structurally Related U ^IV Phosphates