Formation of two dimensional magnonic crystals using garnets on polycrystalline substrates

2015 Fiscal Year Final Research Report

• Project/Area Number: 26600043
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Nanomaterials engineering
• Research Institution: Toyohashi University of Technology
• Principal Investigator: Goto Taichi 豊橋技術科学大学, 工学(系)研究科(研究院), 助教 (00721507)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 磁性酸化物 / スピン波 / マグノニック結晶 / イットリウム鉄ガーネット / 導波路 / 単結晶薄膜

Outline of Final Research Achievements

Waveguides for spin waves were developed as the analogy of optical waveguides. Spin waves are collective precession of magnetic moments (spins) in magnetic media. Such spin waves have similar characteristics with optical waves. However several essential techniques to use these spin waves in devices have not been developed. To overcome this issue, fundamental properties of spin wave waveguide were studied. The material of the spin wave waveguide was yttrium iron garnet, processed into waveguide shapes. The magnonic band gap was excited with metallic periodic structure. The spin wave waveguide medium was prepared on polycrystalline substrates with buffer layers. The magnetic properties of the prepared films with various conditions were studied.

Free Research Field

ナノ・マイクロ工学