Magnetoelectrics, materials that exhibit coupling between magnetic and electric degrees of freedom, not only offer a rich environment for studying the fundamental materials physics of spin-charge coupling but also present opportunities for future information technology paradigms. We present results of electric field manipulation of spins in a ferroelectric medium using dilute ferric ion–doped lead titanate as a model system. Combining first-principles calculations and electron paramagnetic resonance (EPR), we show that the ferric ion spins are preferentially aligned perpendicular to the ferroelectric polar axis, which we can manipulate using an electric field. We also demonstrate coherent control of the phase of spin superpositions by applying electric field pulses during time-resolved EPR measurements. Our results suggest a new pathway toward the manipulation of spins for quantum and classical spintronics.

磁电是在磁自由度和电自由度之间表现出耦合的材料，不仅为研究自旋电荷耦合的基本材料物理学提供了丰富的环境，而且为未来的信息技术范式提供了机遇。我们介绍了使用稀铁离子掺杂的钛酸铅作为模型系统对铁电介质中自旋进行电场操纵的结果。结合第一性原理计算和电子顺磁共振（EPR），我们显示出铁离子自旋优先垂直于铁电极轴排列，我们可以使用电场进行操纵。我们还演示了通过在时间分辨的EPR测量过程中施加电场脉冲来对自旋叠加相位进行相干控制。