20% Fe substituted Li₂MnO₃ (Li_1+x(Fe_0.2Mn_0.8)_1-xO₂, 0 < x < 1/3) was prepared using coprecipitation–calcination method. X-ray Rietveld analyses showed that most Fe and Mn ions were on both 4g and 2b sites and small amount of them occupy on 2c and 4h sites in monoclinic Li₂MnO₃-type structure. Neutron Rietveld analysis revealed that Mn ion was mainly on the 4g site, whereas Fe ion was on both 4g and 2b sites. Temperature dependence of magnetization detected a cusp at 30 K for the sample, originating from its antiferromagnetic nature. The ⁵⁷Fe Mössbauer spectrum at 300 K consisted of two symmetric doublets with different isomer shifts. From the isomer shifts, Fe ion existed as 3+δ and 4+δ states (0 < δ < 1). Below 200 K, the Fe^4+δ component split to two doublets having two isomer shift values assigned as 4+ and 5+ states. At 3 K, the spectrum consisted of magnetically ordered 3+, 4+, and 5+ irons and paramagnetic 4+ state iron. The magnetically ordered pentavalent and tetravalent Fe ions can be stabilized at a highly distorted octahedral 4g site, whereas magnetically ordered trivalent and paramagnetic tetravalent Fe ions exist mainly on the less distorted octahedral 2b site.

20％的Fe取代的李₂的MnO ₃（栗_{1+ X}（铁_0.2锰_0.8）_{1- X} Ø ₂，0 < X <1/3），使用共沉淀焙烧方法制备。X射线Rietveld分析表明，单斜Li ₂ MnO ₃型结构中，大多数Fe和Mn离子同时存在于4 g和2 b位置，少量占据2 c和4 h位置。中子Rietveld分析表明，Mn离子主要位于4 g位置，而Fe离子同时位于4 g和2b网站。磁化强度的温度依赖性检测到样品在30 K处出现尖点，这是由于其反铁磁性质引起的。300 K处的⁵⁷ FeMössbauer光谱由两个异构体位移不同的对称双峰组成。从异构体位移来看，Fe离子以3+ δ和4+ δ状态存在（0 < δ <1）。在200 K以下，Fe ^{4 +δ}组分分裂为两个双峰，具有两个被指定为4+和5+状态的异构体位移值。在3 K时，光谱由磁性排序的3 +​​，4 +和5+铁和顺磁性4+态铁组成。磁性有序的五价和四价Fe离子可以稳定在高度扭曲的八面体4 g磁有序的三价和顺磁性四价铁离子主要存在于畸变程度较小的八面体2b位置。