The polycrystalline samples of Ba_0.96Ca_0.04Ti_(1-x)Mn_xO_3-x for 0 ≤ x ≤ 0.15 were synthesized using conventional solid state reaction route. The Rietveld analysis shows that the samples crystallize in pure tetragonal structure for x ≤ 0.02, hexagonal structure for x = 0.15 and are mixed phase for 0.02 < x < 0.15. SEM analysis shows that the tetragonal phase has lower grain size as compared to hexagonal phase. The remnant polarisation was found to decrease with increasing Mn concentration. The 0.03 = x ≤ 0.15 samples were found to exhibit almost paramagnetic character with the strength of co-operative interactions among spins increasing with Mn concentration. The XPS and Brillouin analysis confirms that the Mn exhibits both +2 and + 3 oxidations states.

Ba _0.96 Ca _0.04 Ti _（1-x） Mn _x O _3-x的多晶样品使用常规固态反应路线合成0≤x≤0.15的α。Rietveld分析表明，对于x≤0.02，样品以纯四方晶形式结晶；对于x = 0.15，样品以六方晶结构结晶；对于0.02 <x <0.15，样品为混合相。SEM分析表明，与六方相相比，四方相具有较小的晶粒尺寸。发现残余极化随着Mn浓度的增加而降低。发现0.03 = x≤0.15的样品几乎表现出顺磁性，并且随着Mn浓度的增加，自旋之间的合作相互作用强度也增加。XPS和布里渊分析确定了Mn表现出+2和+3氧化态。