2003
DOI: 10.1021/ja034813+
|View full text |Cite
|
Sign up to set email alerts
|

Structural Tuning of Charge, Orbital, and Spin Ordering in Double-Cell Perovskite Series between NdBaFe2O5 and HoBaFe2O5

Abstract: Charge, orbital, and magnetic ordering of NdBaFe(2)O(5) and HoBaFe(2)O(5), the two end-members of the double-cell perovskite series RBaFe(2)O(5), have been characterized over the temperature range 2-450 K, using differential scanning calorimetry, neutron thermodiffractometry and high-resolution neutron powder diffraction. Upon cooling, both compounds transform from a class-III mixed valence (MV) compound, where all iron atoms exist as equivalent MV Fe(2.5+) ions, through a "premonitory" charge ordering into a … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1
1

Citation Types

1
44
0

Year Published

2004
2004
2017
2017

Publication Types

Select...
5
3

Relationship

0
8

Authors

Journals

citations
Cited by 55 publications
(47 citation statements)
references
References 34 publications
1
44
0
Order By: Relevance
“…12). When averaged, their temperature evolution yields T = 433(1) K N via least-squares fit with Brillouin function (Fig 2), in agreement with 432 K for HoBaFe 2 O 5 obtained from the decay of the ordered moment seen by neutron powder diffraction [18]. An analogous fit of the center shifts yields a Debye temperature of 629 K (Fig.…”
Section: Valence-mixed Pairsupporting
confidence: 77%
See 2 more Smart Citations
“…12). When averaged, their temperature evolution yields T = 433(1) K N via least-squares fit with Brillouin function (Fig 2), in agreement with 432 K for HoBaFe 2 O 5 obtained from the decay of the ordered moment seen by neutron powder diffraction [18]. An analogous fit of the center shifts yields a Debye temperature of 629 K (Fig.…”
Section: Valence-mixed Pairsupporting
confidence: 77%
“…Fig. 17 shows that the entropy gain upon heating through T V and T p (a measure of valence mixing) is proportional to shortening of the Fe-Fe basal-plane distance [11], which occurs despite a minor expansion along c [18]. The donation of the minority-spin electron from Fe 2+ leads to an interaction that is weaker than, but not entirely unlike, the weak bonding of a transition-metal centralatom donor to a ligand acceptor where the donor orbital removes much of the ligand-field repulsion upon morphing into a weak bond.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…9 This common feature suggests that the correlation originates in the chain-type CO along the b axis, for which the orthorhombic distortion is indispensable. 16,17 Fulfillment of this correlation between s and T CO may take priority over the volume change effect, and we see that despite a slight volume increase upon the CO transition in BaYCo 2 O 5.0 , the applied pressure increases T CO .…”
Section: A Pressure Effects On the Charge-ordering Temperaturementioning
confidence: 73%
“…[2,3] Analogously, ordering of the A-cations can also occur, showing a strong preference for a layered arrangement. [4][5][6] Finally, simultaneous Aand B-site cation ordering can also occur in compounds of type AA ′ BB ′ O 6 . [7] These compounds are interesting from a structural point of view since they exhibit rocksalt ordering of B-site cations and layered ordering of A-site cations.…”
mentioning
confidence: 99%