Evolution of the Jahn−Teller Distortion of MnO6Octahedra in RMnO3Perovskites (R = Pr, Nd, Dy, Tb, Ho, Er, Y): A Neutron Diffraction Study

2000 ◽  
Vol 39 (5) ◽  
pp. 917-923 ◽  
Author(s):  
J. A. Alonso ◽  
M. J. Martínez-Lope ◽  
M. T. Casais ◽  
M. T. Fernández-Díaz
Keyword(s):  
Neutron Diffraction ◽  
Diffraction Study ◽  
Neutron Diffraction Study ◽  
Teller Distortion ◽  
Jahn Teller ◽  
Jahn Teller Distortion

Neutron-diffraction study of the Jahn-Teller transition in stoichiometricLaMnO3

1998 ◽  
Vol 57 (6) ◽  
pp. R3189-R3192 ◽  
Author(s):  
J. Rodríguez-Carvajal ◽  
M. Hennion ◽  
F. Moussa ◽  
A. H. Moudden ◽  
L. Pinsard ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Diffraction Study ◽  
Neutron Diffraction Study ◽  
Teller Transition ◽  
Jahn Teller

Local Jahn-Teller distortion inLa1−xSrxMnO3observed by pulsed neutron diffraction

1997 ◽  
Vol 56 (14) ◽  
pp. R8475-R8478 ◽  
Author(s):  
Despina Louca ◽  
T. Egami ◽  
E. L. Brosha ◽  
H. Röder ◽  
A. R. Bishop
Keyword(s):  
Neutron Diffraction ◽  
Teller Distortion ◽  
Jahn Teller ◽  
Pulsed Neutron ◽  
Jahn Teller Distortion

Neutronenbeugungsmessungen an Li2CrCl4 / Neutron Diffraction Studies of Li2CrCl4

1989 ◽  
Vol 44 (10) ◽  
pp. 1203-1205 ◽  
Author(s):  
Peter Kuske ◽  
Jeremy Karl Cockcroft ◽  
Heinz Dieter Lutz
Keyword(s):  
Neutron Diffraction ◽  
Elevated Temperatures ◽  
Inverse Spinel ◽  
Lithium Ions ◽  
Teller Distortion ◽  
Inverse Spinel Structure ◽  
Jahn Teller ◽  
Jahn Teller Distortion ◽  
High Temperature Polymorph ◽  
Large Disorder

Neutron diffraction studies of Li2CrCl4 at 350 °C are presented. The cubic high-temperature polymorph of Li2CrCl4 (space group Fd3̅m, Z = 8, R = 3.26%) crystallizes in an inverse spinel structure (cF56) with large Frenkel disorder of the tetrahedrally coordinated lithium ions. The occupation of the interstitial octahedral 16c sites by lithium ions is 38%, that of the tetrahedral 8a lattice sites only 24%. This large disorder is obviously the reason of the high ionic conductivity of Li2CrCl4 at elevated temperatures. There are some indications of a dynamic Jahn-Teller distortion of the CrCl6 units.

Enhancement of the guest orderliness in a low-symmetric perovskite-type metal–organic framework influenced by Jahn–Teller distortion

2018 ◽  
Vol 20 (34) ◽  
pp. 21809-21813 ◽  
Author(s):  
M. Viswanathan
Keyword(s):  
Neutron Diffraction ◽  
Single Crystal ◽  
Metal Organic Framework ◽  
Teller Distortion ◽  
Unusual Effect ◽  
Jahn Teller ◽  
Metal Organic ◽  
Jahn Teller Distortion ◽  
Perovskite Type ◽  
Organic Framework

Single-crystal neutron diffraction reveals an enhancement of the guest-orderliness in a low-symmetric MOF, with an opposite scenario for its high-symmetric cousin. The mechanism behind this unusual effect is proposed.

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