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Topochemical reduction of YMnO3 into a composite structure

Abstract:
Topochemical modification methods for solids have shown great potential in generating metastable structures inaccessible through classical synthetic routes. Here, we present the enhanced topotactic reduction of the multiferroic compound YMnO3. At moderate temperature in ammonia flow, the most reduced YMnO3-δ (δ = 0.5) phase could be stabilized. XRD, PND, and HREM results show that phase separation occurs into two intimately intergrown layered sublattices with nominal compositions ∞[YMn(2+)O2+x]((1-2x)+) and ∞[YMn(2+)O3-x]((1-2x)-) containing versatile Mn(2+) coordinations. The former sublattice shows original AA stacking between Mn layers, while AB stacking in the latter results from oxygen removal from the parent YMnO3 crystal structure.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1021/acs.inorgchem.7b01309

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Publisher:
American Chemical Society
Journal:
Inorganic Chemistry More from this journal
Volume:
56
Issue:
14
Pages:
8547-8553
Publication date:
2017-07-17
Acceptance date:
2017-05-26
DOI:
EISSN:
1520-510X
ISSN:
0020-1669


Language:
English
Keywords:
Pubs id:
pubs:707785
UUID:
uuid:416cbbca-f51e-4319-8f7d-f4fd03001cd5
Local pid:
pubs:707785
Source identifiers:
707785
Deposit date:
2017-08-10

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