摘要
Studies of thermodynamic, electric and magnetic properties were conducted on the （KxSr1-x）CrOz, x = 0.10, 0.15 and 0.50system; adjusted for different crystal sizes （polycrystalline, nano-crystalline and single crystals）. For polycrystals, a solid-statereaction method was used （room temperature, TR, up to 665 °C）. Nano-crystals, a crushing technique with a mechanical mortar wereprocessed at TR. Single crystals were acquired, through fusion method starting from polycrystals pre-manufactured （665 °C） over900 °C. For the methods described above, they all were worked at atmospheric pressure. Studying the thermodynamic in the crystalsmixture were obtained by TGA （thermogravimetric analysis） and DSC （differential scanning calorimetry）. Powder XRD （X-raydiffraction） in the manual grinding mixture a SrCO3 solid solution, at TR was detected. When increasing the temperature, a solidsolution of K2Sr（CrO4）2 is formed. By HRTEM （high-resolution transmission electronic microscope）, crystal sizes 4-12 nm were seen.（K0.50Sr0.50）CrOz composition presents a weak ferromagnetic and an insulating behavior.
出处
《材料科学与工程（中英文B版）》
2018年第4期150-160,共11页
Journal of Materials Science and Engineering B
