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

Abstract

A new uranium fluoride phosphate, UFPO4, was synthesized via a mild hydrothermal route and characterized optically, thermally, and magnetically. Two thermal transformation products, U 2O(PO 4) 2 and U IVU VIO 2(PO 4) 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 UFPO 4 and U IVU VIO 2(PO 4) 2 in order to characterize this unusual magnetic behavior.

Authors:
 [1];  [2]; ORCiD logo [1]
  1. Univ. of South Carolina, Columbia, SC (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1486926
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Inorganic Chemistry
Additional Journal Information:
Journal Volume: 57; Journal Issue: 15; Journal ID: ISSN 0020-1669
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS

Citation Formats

Felder, Justin B., Calder, Stuart, and zur Loye, Hans-Conrad. Retention of a Paramagnetic Ground State at Low Temperatures in a Family of Structurally Related UIV Phosphates. United States: N. p., 2018. Web. doi:10.1021/acs.inorgchem.8b01284.
Felder, Justin B., Calder, Stuart, & zur Loye, Hans-Conrad. Retention of a Paramagnetic Ground State at Low Temperatures in a Family of Structurally Related UIV Phosphates. United States. doi:10.1021/acs.inorgchem.8b01284.
Felder, Justin B., Calder, Stuart, and zur Loye, Hans-Conrad. Tue . "Retention of a Paramagnetic Ground State at Low Temperatures in a Family of Structurally Related UIV Phosphates". United States. doi:10.1021/acs.inorgchem.8b01284. https://www.osti.gov/servlets/purl/1486926.
@article{osti_1486926,
title = {Retention of a Paramagnetic Ground State at Low Temperatures in a Family of Structurally Related UIV Phosphates},
author = {Felder, Justin B. and Calder, Stuart and zur Loye, Hans-Conrad},
abstractNote = {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 UIVUVIO2(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 UIVUVIO2(PO4)2 in order to characterize this unusual magnetic behavior.},
doi = {10.1021/acs.inorgchem.8b01284},
journal = {Inorganic Chemistry},
number = 15,
volume = 57,
place = {United States},
year = {2018},
month = {7}
}

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Works referencing / citing this record:

CSD 1842529: Experimental Crystal Structure Determination: Non-CSD Structure
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