Investigating the origin of the magnetic switching in Sr2-xCaxCrSbO6.
Sr2CrSbO6 and Ca2CrSbO6 are both double perovskites with a high degree of cation ordering however Sr2CrSbO6 is an antiferromagnet while Ca2CrSbO6 is a ferromagnet. To investigate this switching of the magnetic properties by simply changing the diamagnetic cation we synthesised the series Sr2-xCaxCrSbO6 and found that, surprisingly, there is an intermediate paramagnetic state rather than a spin-glass state between the antiferromagnetic and ferromagnetic states. We wish to investigate whether the change in the magnetic properties across the series can be correlated to the degree of octahedral tilting and confirm whether, as suggested from powder x-ray diffraction, there is a structural phase transition from the I2/m to the P21/n space group between x=0.25 and x=0.5. To do this we propose to collect powder neutron diffraction data on six compounds in the series on instrument D2b at room temperature and at 2 K using a wavelength of 1.59 Å and at 2 K using a wavelength of 2.40 Å to refine the crystal structures and to look for magnetic Bragg peaks. Thus 18 data collections are required, which we estimate will require four days of beamtime on instrument D2b.
Please note that you will need to login with your ILL credentials to download the data.
Download DataThe recommended format for citing this dataset in a research publication is in the following format:
BATTLE Peter; CHIN Chun Mann; GILES Emily and SUARD Emmanuelle. (2016). Investigating the origin of the magnetic switching in Sr2-xCaxCrSbO6.. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2461
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.