CONICET | Buscador de Institutos y Recursos Humanos

We report the synthesis of the title compounds and the refinement of their structures using Rietveld analysis of powder XRD data. All belong to the monoclinic space group P21/n. While the crystallographic formula can be written as La2(Co)2a(Co1/3M2/3)2bO6 for M= Nb or Ta, indicating the highest possible order for the cations, we find La2(Co2/3V1/3)2a(Co2/3V1/3)2bO6for V replacement indicating the highest disorder configuration. The cell volume for La2Co4/3M2/3O6 decreases as the ionic radius of the M5+ cation decreases. These compounds were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. as the ionic radius of the M5+ cation decreases. These compounds were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. disorder configuration. The cell volume for La2Co4/3M2/3O6 decreases as the ionic radius of the M5+ cation decreases. These compounds were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. as the ionic radius of the M5+ cation decreases. These compounds were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. Nb or Ta, indicating the highest possible order for the cations, we find La2(Co2/3V1/3)2a(Co2/3V1/3)2bO6for V replacement indicating the highest disorder configuration. The cell volume for La2Co4/3M2/3O6 decreases as the ionic radius of the M5+ cation decreases. These compounds were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. as the ionic radius of the M5+ cation decreases. These compounds were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. disorder configuration. The cell volume for La2Co4/3M2/3O6 decreases as the ionic radius of the M5+ cation decreases. These compounds were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. as the ionic radius of the M5+ cation decreases. These compounds were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. formula can be written as La2(Co)2a(Co1/3M2/3)2bO6 for M= Nb or Ta, indicating the highest possible order for the cations, we find La2(Co2/3V1/3)2a(Co2/3V1/3)2bO6for V replacement indicating the highest disorder configuration. The cell volume for La2Co4/3M2/3O6 decreases as the ionic radius of the M5+ cation decreases. These compounds were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. as the ionic radius of the M5+ cation decreases. These compounds were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. disorder configuration. The cell volume for La2Co4/3M2/3O6 decreases as the ionic radius of the M5+ cation decreases. These compounds were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. as the ionic radius of the M5+ cation decreases. These compounds were previously shown to be ferrimagnetic with Curie temperatures in the range 60-70 K. Since the incorporation of cations with the sp hybridized lone pair can potentially induce ferroelectric properties, we also synthesized La4/3Bi2/3Co4/3Ta2/3O6 where we found a partial cations disorder. Crystal and magnetic structures refined with powder neutrons diffraction measurements as well as the infrared spectroscopic characterization, now in progress, will be presented. cations disorder. Crystal and magneti

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