Iron(III)-polymaltose pharmaceutical ferritin analogue Ferrifol® was investigated by high resolution transmission electron microscopy (HRTEM), X-ray diffraction, thermogravimetry, electron magnetic resonance (EMR) spectroscopy, dc magnetization measurements and ⁵⁷Fe Mössbauer spectroscopy to get novel information about the structural arrangement of the iron core. The Ferrifol® Mössbauer spectra measured in the range from 295 to 90 K demonstrated non-Lorentzian two-peak pattern. These spectra were better fitted using a superposition of 5 quadrupole doublets with the same line width. The obtained Mössbauer parameters were different and an unusual line broadening with temperature decrease was observed. Measurements of the Ferrifol® Mössbauer spectra from 60 to 20 K demonstrated a slow decrease of magnetic relaxation in the iron core. Zero-field-cooled and field-cooled magnetization measurements revealed a blocking temperature at ~33 K and paramagnetic state of the Ferrifol® iron core at higher temperatures. Isothermal magnetization measurements at 5 K show that the saturation magnetic moment is ~0.31 emu/g. X-band EMR spectroscopy measurements revealed the presence of different magnetic species in the sample. Transmission electron microscopy demonstrated that the size of the iron cores in Ferrifol® is in the range 2–6 nm. The lattice periodicity in these iron cores, measured on the HRTEM images, appeared to be vary in the range 2.2–2.7 Å. This can be best understood as sets of close packed O(OH) layers in ferrihydrite cores without long range correlation.

铁（III）-polymaltose药物铁蛋白类似物Ferrifol®通过高分辨率透射电子显微镜（HRTEM），X射线衍射，热，电子磁共振（EMR）光谱，直流磁化测量和研究⁵⁷FeMössbauer光谱学可获取有关铁芯结构安排的新颖信息。在295至90 K范围内测量的Ferrifol®Mössbauer光谱显示出非洛伦兹二峰模式。使用相同线宽的5个四极双峰的叠加可以更好地拟合这些光谱。所获得的Mössbauer参数是不同的，并且观察到随着温度降低异常的线展宽。在60至20 K范围内对Ferrifol®Mössbauer光谱进行的测量表明，铁芯中的磁弛豫缓慢降低。零磁场冷却和磁场冷却的磁化强度测量结果表明，阻塞温度为〜33 K，较高温度下Ferrifol®铁芯的顺磁态。在5 K下的等温磁化强度测量表明，饱和磁矩约为0.31 emu / g。X波段EMR光谱测量显示样品中存在不同的磁性物质。透射电子显微镜显示，Ferrifol®中的铁芯尺寸在2–6 nm范围内。在HRTEM图像上测量的这些铁芯的晶格周期性似乎在2.2–2.7Å的范围内变化。可以最好地理解为三水铁矿岩心中紧密堆积的O（OH）层的集合，而没有长程相关性。