We review how a magnetic resonance force microscope (MRFM) can be applied to perform ferromagnetic resonance (FMR) spectroscopy of \emph{individual} sub-micron size samples. We restrict our attention to a thorough study of the spin-wave eigen-modes excited in permalloy (Py) disks patterned out of the same 43.3 nm thin film. The disks have a diameter of either 1.0 or $0.5 μ$m and are quasi-saturated by a perpendicularly applied magnetic field. It is shown that \emph{quantitative} spectroscopic information can be extracted from the MRFM measurements. In particular, the data are extensively compared with complementary approximate models of the dynamical susceptibility: i) a 2D analytical model, which assumes an homogeneous magnetization dynamics along the thickness and ii) a full 3D micromagnetic simulation, which assumes an homogeneous magnetization dynamics below a characteristic length scale $c$ and which approximates the cylindrical sample volume by a discretized representation with regular cubic mesh of lateral size $c=3.9$ nm. In our analysis, the distortions due to a breaking of the axial symmetry are taken into account, both models incorporating the possibility of a small misalignment between the applied field and the normal of the disks.
A short-circuited coplanar waveguide for low-temperature single-port ferromagnetic resonance spectroscopy set-up to probe the magnetic properties of ferromagnetic thin films
Semiconducting Electronic Structure of the Ferromagnetic Spinel $\mathbf{Hg}\mathbf{Cr}_2\mathbf{Se}_4$ Revealed by Soft-X-Ray Angle-Resolved Photoemission Spectroscopy
Element-resolved x-ray ferrimagnetic and ferromagnetic resonance spectroscopy
我们报告使用X射线磁圆二色性（XMCD）在千兆赫频率的元素特定的磁共振谱的测量。我们研究了Gd取代钇铁石榴石中Gd和Fe离子的亚铁磁旋进，表明Gd的共振场和线宽与Fe精确一致，直到参数激发的非线性区域。相对于Fe的Gd X射线磁共振信号的相反符号与两种离子物种的动态反铁磁对准一致。此外，我们研究了双层金属膜，Ni $_{80}$ Fe $_{20}$（5 nm）/Ni（50 nm），其中Ni和Ni $_{80}$ Fe $_{20}$的耦合共振模式分别解决，揭示了在各个层的共振场的位移，但没有相互驱动的效果。能量依赖的动态XMCD测量，结合X射线吸收和磁共振光谱。
Photo-induced demagnetization and polaron binding energy increase observed by mid-infrared pump-probe spectroscopy in ferromagnetic Ga$_{0.94}$Mn$_{0.06}$As
Chiral Porphyrin Monolayers on Ferromagnetic Thin Films: Ultrafast Spectroscopy of Hybrid Interfaces
Faculty of Chemistry, Adam Mickiewicz University（亚当·密茨凯维奇大学化学系）；Center for Advanced Technologies, Adam Mickiewicz University（亚当·密茨凯维奇大学先进技术中心）；Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research（德累斯顿-罗斯多夫亥姆霍兹中心离子束物理与材料研究所）；Faculty of Physics and Astronomy, Adam Mickiewicz University（亚当·密茨凯维奇大学物理与天文学系）
Electronic Structure of the Ferromagnetic Semiconductor Fe-doped Ge Revealed by Soft X-ray Angle-Resolved Photoemission Spectroscopy
Ge $_{1-x}$ Fe $_{x}$（Ge：Fe）在高达210 K的相对高温下显示出铁磁行为，因此是与Si技术兼容的自旋电子学应用的有前景的材料。我们用软X射线角分辨光电子能谱（SX-ARPES）研究了它的电子结构，以阐明其铁磁性的机制。我们在动量空间的宽范围内观察到费米能级态（$E_{F}$）的有限Fe 3 $d$分量，其中$E_{F}$位于价带顶（VBM）之上.第一性原理超原胞计算还表明，$E_{F}$位于VBM之上，在窄的自旋向下的$d$（$e$）带内，并且在源自强$p$（$t_{2}$）杂化的深受体能级起源的自旋向上的杂质带内。结果表明，Ge：Fe的$d$（$e$）窄能带是Fe原子间铁磁耦合的主要原因，而受主能级起源的能带是Ge：Fe的输运性质的主要原因.
Interplay between Exchange Interaction and Magnetic Shape Anisotropy of ferromagnetic nanoparticles in a non-magnetic matrix for rare-earth-free permanent magnets
Ferromagnetic Resonance Spectroscopy on the Kagome Magnet MgMn$_6$Sn$_6$
Leibniz Institute for Solid State and Materials Research（莱布尼茨固体与材料研究所）；S. N. Bose National Centre for Basic Sciences（S.N. 玻色基础科学国家中心）；TU Dresden（德累斯顿工业大学）
