论文标题
Ag掺杂的单斜ZRO2化合物中的D0铁磁性
d0 Ferromagnetism in Ag-doped Monoclinic ZrO2 Compounds
论文作者
论文摘要
最近，据信D0或固有的铁磁性为过渡金属诱导的氧化物中的铁磁性提供了另一种途径。追求增加D0铁磁磁性领域；我们已承诺研究掺杂Ag的ZRO2化合物的晶体结构和磁性。通过固态反应途径制备Zr1-Xagxo2的多晶样品（具有X = 0、0.02、0.04、0.06和0.08）。所有制备的化合物都在ZRO2的单斜形对称性中结晶。在我们的研究中，纯ZRO2化合物表现出顺磁行为。但是，掺杂Ag的ZRO2化合物表现出铁磁到顺磁转变。发现Curie温度从X = 0.02的28.7 K增加到X = 0.08掺杂的Zro2。因此，在ZRO2中引入Ag会引起较大的thetac的铁磁性。磁滞曲线的测量结果表明，Ag掺杂的ZRO2化合物表现出磁滞回路，其胁迫约为1350 OE。此外，Ag浓度的增加导致饱和磁化值（MS）的值增加；对于x = 0.06样品，MS的最大值记录为0.01μb/ag ion。在高温（13500C）下样品的烧结减少了铁磁剂，并导致顺磁行为。
Recently d0 or intrinsic ferromagnetism was believed to provide an alternative pathway to transition metal induced ferromagnetism in oxide. In pursuit of augmenting the area of d0 ferromagnetism; we have undertaken to study the crystal structure and magnetic properties of Ag-doped ZrO2 compounds. Polycrystalline samples of Zr1-xAgxO2 (with x=0, 0.02, 0.04, 0.06 and 0.08) were prepared by solid-state reaction route. All the prepared compounds are found to crystallize in monoclinic symmetry of ZrO2. In our study, pure ZrO2 compound exhibits paramagnetic behavior. However, the Ag-doped ZrO2 compounds exhibit ferromagnetic to paramagnetic transition. The Curie temperature was found to increase from 28.7 K for x=0.02 to 173.2 K for x= 0.08 doped ZrO2. Thus, the introduction of Ag in ZrO2 induces ferromagnetism with a large ThetaC. The measurements of hysteresis curves indicate that Ag doped ZrO2 compounds exhibit hysteresis loops with a coercivity of around 1350 Oe. Moreover, increase in Ag concentration resulted increase in the value of saturation magnetization (MS); the maximum value of MS was recorded as 0.01 μB/Ag ion for x= 0.06 sample. The sintering of sample at high temperature (13500C) diminishes the ferromagnetism and it leads to paramagnetic behaviour.
