We report on structural, electrical, and weak ferromagnetic-to-antiferromagnetic possessions of Ba_(1−x)La_xNi_0.01Ti_0.99O₃ (BLNT) samples with x = 0.00, 0.25, 0.50, and 0.75%. The X-ray diffraction (XRD) and Raman spectra show that the sol–gel combustion route synthesized samples are successfully incorporated with La³⁺ ions into BaNi_0.01Ti_0.99O₃ (BNT) lattice. The EPR signals at g = 1.967 and g = 2.003 are attributed to the V_(Ba) and V_(Ti) defects, respectively. For x = 0.75%, V_(Ba) signal disappears due to the subtle charge-compensation mechanism present in the BLNT sample. The BNT ceramics exhibit a weak ferromagnetic nature; upon La ion doping, the weak ferromagnetic (WFM) tends to exhibit strong antiferromagnetic (AFM) nature in BLNT. This magnetic phase transition can be described in the stipulation of the change in the oxidation state. Escalating in the dielectric constant and ac conductivity was due to the higher doping concentration of La³⁺ ion in BNT ceramics. BLNT clearly shows that as La³⁺ ion-doping concentration increases, the diameter of the impedance semicircle decreases due to the increased conducting nature of the samples. The ferroelectric property was deliberately investigated by a P–E hysteresis loop and its saturation polarization was found to decrease with increasing concentrations of La³⁺ ion doping, and the observed results are discussed.

我们报告了x  = 0.00、0.25、0.50和0.75％的Ba _{（1- x）} La _x Ni _0.01 Ti _0.99 O ₃（BLNT）样品的结构，电和弱铁磁-反铁磁占有。X射线衍射（XRD）和拉曼光谱表明，溶胶-凝胶燃烧路线合成的样品已成功地将La ³⁺离子掺入BaNi _0.01 Ti _0.99 O ₃（BNT）晶格中。g  = 1.967和g  = 2.003时的EPR信号归因于V _（Ba）和V _（Ti）缺陷。对于x  = 0.75％，由于BLNT样品中存在微妙的电荷补偿机制，因此V _（Ba）信号消失了。BNT陶瓷表现出弱的铁磁特性。在La离子掺杂后，弱铁磁（WFM）倾向于在BLNT中表现出强反铁磁（AFM）性质。该磁性相变可以在氧化态变化的规定中描述。介电常数和交流电导率的提高是由于BNT陶瓷中La ³⁺离子的掺杂浓度较高。BLNT清楚地表明La ³⁺离子掺杂浓度增加，由于样品的导电性增加，阻抗半圆的直径减小。通过PE磁滞回线专门研究了铁电性能，发现其饱和极化随La ³⁺离子掺杂浓度的增加而降低，并讨论了观察到的结果。