Search: onr:"swepub:oai:DiVA.org:uu-481278" >
As-Se Pentagonal Li...
As-Se Pentagonal Linkers to Induce Chirality and Polarity in Mixed-Valent Fe-Se Tetrahedral Chains Resulting in Hidden Magnetic Ordering
-
- Gamage, Eranga H. (author)
- Iowa State Univ, Dept Chem, Ames, IA 50011 USA.;US DOE, Ames Lab, Ames, IA 50011 USA.
-
- Kamali, Saeed (author)
- Univ Tennessee, Mech Aerosp & Biomed Engn Dept, Inst Space, Tullahoma, TN 37388 USA.;Middle Tennessee State Univ, Dept Phys & Astron, Murfreesboro, TN 37132 USA.
-
- Clark, Judith K. (author)
- Florida State Univ, Dept Chem & Biochem, Tallahassee, FL 32306 USA.
-
show more...
-
- Lee, Yongbin (author)
- US DOE, Ames Lab, Ames, IA 50011 USA.
-
- Yox, Philip (author)
- Iowa State Univ, Dept Chem, Ames, IA 50011 USA.;US DOE, Ames Lab, Ames, IA 50011 USA.
-
- Shafer, Padraic (author)
- Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA.
-
- Yaroslavtsev, Alexander (author)
- Uppsala universitet,FREIA
-
- Ke, Liqin (author)
- US DOE, Ames Lab, Ames, IA 50011 USA.
-
- Shatruk, Michael (author)
- Florida State Univ, Dept Chem & Biochem, Tallahassee, FL 32306 USA.;Natl High Magnet Field Lab, Tallahassee, FL 32310 USA.
-
- Kovnir, Kirill (author)
- Iowa State Univ, Dept Chem, Ames, IA 50011 USA.;US DOE, Ames Lab, Ames, IA 50011 USA.
-
show less...
-
Iowa State Univ, Dept Chem, Ames, IA 50011 USA;US DOE, Ames Lab, Ames, IA 50011 USA. Univ Tennessee, Mech Aerosp & Biomed Engn Dept, Inst Space, Tullahoma, TN 37388 USA.;Middle Tennessee State Univ, Dept Phys & Astron, Murfreesboro, TN 37132 USA. (creator_code:org_t)
- 2022-06-14
- 2022
- English.
-
In: Journal of the American Chemical Society. - : American Chemical Society (ACS). - 0002-7863 .- 1520-5126. ; 144:25, s. 11283-11295
- Related links:
-
https://urn.kb.se/re...
-
show more...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- A novel mixed-valent hybrid chiral and polar compound, Fe7As3Se12(en)(6)(H2O), has been synthesized by a single-step solvothermal method. The crystal structure consists of 1D [Fe5Se9] chains connected via [As3Se2]-Se pentagonal linkers and charge-balancing interstitial [Fe(en)(3)](2+) complexes (en = ethylenediamine). Neutron powder diffraction verified that interstitial water molecules participate in the crystal packing. Magnetic polarizability of the produced compound was confirmed by X-ray magnetic circular dichroism (XMCD) spectroscopy. X-ray absorption spectroscopy (XAS) and Fe-57 Mossbauer spectroscopy showed the presence of mixed-valent Fe2+/Fe3+ in the Fe-Se chains. Magnetic susceptibility measurements reveal strong antiferromagnetic nearest neighbor interactions within the chains with no apparent magnetic ordering down to 2 K. Hidden short-range magnetic ordering below 70 K was found by Fe-57 Mossbauer spectroscopy, showing that a fraction of the Fe3+/Fe2+ in the chains are magnetically ordered. Nevertheless, complete magnetic ordering is not achieved even at 6 K. Analysis of XAS spectra demonstrates that the fraction of Fe3+ in the chain increases with decreasing temperature. Computational analysis points out several competing ferrimagnetic ordered models within a single chain. This competition, together with variation in the Fe oxidation state and additional weak intrachain interactions, is hypothesized to prevent long-range magnetic ordering.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
-
Gamage, Eranga H ...
-
Kamali, Saeed
-
Clark, Judith K.
-
Lee, Yongbin
-
Yox, Philip
-
Shafer, Padraic
-
show more...
-
Yaroslavtsev, Al ...
-
Ke, Liqin
-
Shatruk, Michael
-
Kovnir, Kirill
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Condensed Matter ...
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Chemical Science ...
-
and Physical Chemist ...
- Articles in the publication
-
Journal of the A ...
- By the university
-
Uppsala University