| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Simonet, Virginie
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2020Magnetic Investigation of an Atypical Three-Dimensional Bimetallic Oxalate-Based Magnetcitations
- 2019Magnetic Investigation of an Atypical Three-Dimensional Bimetallic Oxalate-Based Magnetcitations
- 2018Single-crystal neutron diffraction study of hexagonal multiferroic YbMnO 3 under a magnetic fieldcitations
- 2018Microscopic insights on the multiferroic perovskite‐like [CH3NH3][Co(COOH)3] compoundcitations
- 2017The magnetic properties and structure of the quasi-two-dimensional antiferromagnet CoPS$_3$citations
- 2017Magnetic and dielectric order in the kagomelike francisite Cu3Bi( SeO3) 2O2Clcitations
- 2015Neutron diffraction investigation of the H−T phase diagram above the longitudinal incommensurate phase of BaCo2V2O8citations
- 2014Magnetic order in the frustrated Ising-like chain compound Sr$_3$NiIrO$_6$citations
- 2010Magnetic and dielectric properties in the langasite-type compounds : A3BFe3D2O14 with A=Ba, Sr, Ca, B=Ta, Nb, Sb and D=Ge, Sicitations
- 2009Single crystal growth of BiMnO3 under high pressure-high temperature
- 2006Magnetic frustration in the spinel compounds GeCo2O4 and GeNi2O4
- 2005Non-magnetic insulator state in Na1CoO2 and phase separation of Na vacanciescitations
- 2005Non-magnetic insulator state in Na1CoO2 and phase separation of Na vacanciescitations
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article
Magnetic frustration in the spinel compounds GeCo2O4 and GeNi2O4
Abstract
In both spinel compounds GeCo$_2$O$_4$ and GeNi$_2$O$_4$ which order antiferromagnetically (at $T_N$=23.5~K and $T_{N_1}$= 12.13~K/$T_{N_2}$=11.46~K) with different Curie Weiss temperatures ($T_{CW}$=80.5~K and -15~K), the usual magnetic frustration criterion $f=|T_{CW}|/T_N>>1$ is not fulfilled. Using neutron powder diffraction and magnetization measurements up to 55~T, both compounds are found with a close magnetic ground state at low temperature and a similar magnetic behavior (but with a different energy scale), even though spin anisotropy and first neighbor exchange interactions are quite different. This magnetic behavior can be understood when considering the main four magnetic exchange interactions. Frustration mechanisms are then enlightened.