Remadevi Aiswarya, Kesavapillai Sreedeviamma Dijith, Surendran Kuzhichalil P
Materials Science and Technology Division, National Institute for Interdisciplinary Science and Technology (NIIST-CSIR), Thiruvananthapuram 695019, Kerala, India.
Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India.
ACS Omega. 2018 Oct 26;3(10):14245-14257. doi: 10.1021/acsomega.8b01422. eCollection 2018 Oct 31.
Hierarchical nickel nanowires (h-NiNWs) were synthesized by a simple reduction method and their electrical, magnetic, and electromagnetic characteristics were investigated. These nanowires possess a high magnetic saturation ( ) of 51 emu/g and also a coercivity ( ) of 34.5 Oe, which makes them suitable for soft magnetic sensor applications. Hall transport is being reported for the first time for h-NiNWs, and electrical conductivity at room temperature was studied to assess their applicability as a Hall sensor wherein the Hall coefficient was found to be -1.39 × 10 Ω cm/Oe. Electromagnetic characterization of synthesized h-NiNWs shows excellent microwave shielding effectiveness of above 24 dB for the Ku band (12.4-18 GHz) and a maximum value of 32 dB at 14 GHz for a sample with a thickness of about 1 mm. A room-temperature-curable screen-printable ink was formulated using the synthesized magnetic nanostructures and printed on different flexible substrates. Printed patterns show promising ferromagnetic properties, and they could be potential candidates for soft magnetic sensor applications.
通过一种简单的还原方法合成了分层镍纳米线（h-NiNWs），并对其电学、磁学和电磁特性进行了研究。这些纳米线具有51 emu/g的高磁饱和度（ ）以及34.5 Oe的矫顽力（ ），这使得它们适用于软磁传感器应用。首次报道了h-NiNWs的霍尔输运，并研究了其室温电导率以评估其作为霍尔传感器的适用性，其中发现霍尔系数 为-1.39×10 Ω cm/Oe。合成的h-NiNWs的电磁特性表明，对于Ku波段（12.4 - 18 GHz），其微波屏蔽效能优异，高于24 dB，对于厚度约为1 mm的样品，在14 GHz时最大值为32 dB。使用合成的磁性纳米结构配制了一种室温可固化的丝网印刷油墨，并印刷在不同的柔性基板上。印刷图案显示出有前景的铁磁性能，它们可能是软磁传感器应用的潜在候选材料。
