Temperature-Driven Spin Reorientation Transition in CoPt/AlN Multilayer Films

<table><svg height="14.7125" id="M106" style="vertical-align:-3.22282pt" version="1.1" viewbox="0 0 28.35 14.7125" width="28.35" xmlns="http://www.w3.org/2000/svg">
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<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">2</tspan>
<tspan style="font-size: 12.50px; " x="6.2515001" y="0">𝐾</tspan>
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<text transform="matrix(1,0,0,-1,-56.17,60.37)">
<tspan style="font-size: 8.75px; " x="0" y="0">𝑆</tspan>
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</svg> and <svg height="14.65" id="M107" style="vertical-align:-3.27548pt" version="1.1" viewbox="0 0 41.362499 14.65" width="41.362499" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.65)">
<g transform="translate(72,-60.28)">
<text transform="matrix(1,0,0,-1,-71.95,63.6)">
<tspan style="font-size: 12.50px; " x="0" y="0">−</tspan>
<tspan style="font-size: 12.50px; " x="8.5645552" y="0">𝐾</tspan>
</text>
<text transform="matrix(1,0,0,-1,-53.86,60.47)">
<tspan style="font-size: 8.75px; " x="0" y="0">𝑉</tspan>
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<text transform="matrix(1,0,0,-1,-46.36,63.6)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑑</tspan>
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</g>
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</svg> of CoPt/AlN multilayer films with <svg height="10.75" id="M108" style="vertical-align:-0.15048pt" version="1.1" viewbox="0 0 9.375 10.75" width="9.375" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.75)">
<g transform="translate(72,-63.4)">
<text transform="matrix(1,0,0,-1,-71.95,63.6)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑑</tspan>
</text>
</g>
</g>
</svg> as 2, 4, 6, and 8 nm against temperature. <svg height="14.7125" id="M109" style="vertical-align:-3.22282pt" version="1.1" viewbox="0 0 28.35 14.7125" width="28.35" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.7125)">
<g transform="translate(72,-60.23)">
<text transform="matrix(1,0,0,-1,-71.95,63.5)">
<tspan style="font-size: 12.50px; " x="0" y="0">2</tspan>
<tspan style="font-size: 12.50px; " x="6.2515001" y="0">𝐾</tspan>
</text>
<text transform="matrix(1,0,0,-1,-56.17,60.37)">
<tspan style="font-size: 8.75px; " x="0" y="0">𝑆</tspan>
</text>
</g>
</g>
</svg> is the interface anisotropy energy density and <svg height="14.65" id="M110" style="vertical-align:-3.27548pt" version="1.1" viewbox="0 0 41.362499 14.65" width="41.362499" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,14.65)">
<g transform="translate(72,-60.28)">
<text transform="matrix(1,0,0,-1,-71.95,63.6)">
<tspan style="font-size: 12.50px; " x="0" y="0">−</tspan>
<tspan style="font-size: 12.50px; " x="8.5645552" y="0">𝐾</tspan>
</text>
<text transform="matrix(1,0,0,-1,-53.86,60.47)">
<tspan style="font-size: 8.75px; " x="0" y="0">𝑉</tspan>
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</svg> is the absolute value of the volume anisotropy energy density. </table>

Journal of Nanomaterials

fig5

Figure 5

Figure 5: Temperature-Driven Spin Reorientation Transition in CoPt/AlN Multilayer Films 