Journal
PHYSICAL REVIEW MATERIALS
Volume 5, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevMaterials.5.114406
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Funding
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) [88881.170115/2018-01]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [304627/2017-8]
- Fundacao de Amparo a Pesquisa do Estado de SAo Paulo (FAPESP) [2014/14001-1]
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La doping in the Ce(1-x)LaxCrGe3 system affects the magnetic ordering and exchange interaction of Cr ions, resulting in changes in the magnetic moments between CeCrGe3 and LaCrGe3.
The Ce(1-x)LaxCrGe3 (x = 0, 0.19, 0.43, 0.58, and 1) intermetallic compound system has been investigated by magnetization measurements and neutron scattering techniques to determine the effect of La doping on the magnetic ordering and exchange interaction between Cr ions. The structural and magnetic characterization in this series was first verified by x-ray diffraction and bulk magnetization measurements. The samples exhibit the known hexagonal perovskite structure (P6(3)/mmc space group) and have a single magnetic phase according to magnetization measurements. In this paper, the ferromagnetic ordering temperature for Cr evolves smoothly from a range of 68 K to 77 K for CeCrGe3 to a range of 91 K to 96 K for LaCrGe3 as La replaces Ce. Magnetization results indicate the formation of domain walls below the transition temperature for all Ce(1-x)LaxCrGe3 systems investigated. Neutron results indicate ordered magnetic Cr moments aligned along the c axis for the x = 1 LaCrGe3 system, as well as for x = 0.19, 0.43, and 0.58, which contrasts with the x = 0 CeCrGe3 where the moments order in the ab plane.
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