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High-throughput direct measurement of magnetocaloric effect based on lock-in thermography technique
Yusuke Hirayama, Ryo Iguchi, Xue-Fei Miao +2
We demonstrate a high-throughput direct measurement method for the magnetocaloric effect (MCE) by means of a lock-in thermography (LIT) technique. This method enables systematic me…
Magnetic-field-induced suppression of spin Peltier effect in Pt/ system at room temperature
Ryuichi Itoh, Ryo Iguchi, Shunsuke Daimon +3
We report the observation of magnetic-field-induced suppression of the spin Peltier effect (SPE) in a junction of a paramagnetic metal Pt and a ferrimagnetic insulator ${\rm Y_{3}F…
Detection of induced paramagnetic moments in Pt on YFeO via x-ray magnetic circular dichroism
Takashi Kikkawa, Motohiro Suzuki, Jun Okabayashi +4
Magnetic moments in an ultra-thin Pt film on a ferrimagnetic insulator YFeO (YIG) have been investigated at high magnetic fields and low temperatures by means of X-r…
Thermographic measurements of the spin Peltier effect in metal/yttrium-iron-garnet junction systems
Shunsuke Daimon, Ken-ichi Uchida, Ryo Iguchi +2
The spin Peltier effect (SPE), heat-current generation due to spin-current injection, in various metal (Pt, W, and Au single layers and Pt/Cu bilayer)/ferrimagnetic insulator (yttr…
Terahertz spin currents and inverse spin Hall effect in thin-film heterostructures containing complex magnetic compounds
T. Seifert, U. Martens, S. Günther +20
Terahertz emission spectroscopy of ultrathin multilayers of magnetic and heavy metals has recently attracted much interest. This method not only provides fundamental insights into…
Probing length-scale separation of thermal and spin currents by nanostructuring YIG
Asuka Miura, Takashi Kikkawa, Ryo Iguchi +3
We have fabricated bulk nanostructured ferrimagnetic materials with different grain sizes by sintering ball-milled Y3Fe5O12 (YIG) nanoparticles and measured the grain-size dependen…
Unexpected structural and magnetic depth dependence of YIG thin films
J. F. K. Cooper, C. J. Kinane, S. Langridge +7
We report measurements on yttrium iron garnet (YIG) thin films grown on both gadolinium gallium garnet (GGG) and yttrium aluminium garnet (YAG) substrates, with and without thin Pt…