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<p>Slow evaporation was used to successfully generate bis(3-methyl-<i>N</i>-(1-(pyrazin-2-yl)ethylidene)benzohydrazonato-κ<sup>3</sup><i>O</i>,<i>N</i>,<i>N</i>′)nickel(II) (MPBN) single crystals, which crystallised in the non-centrosymmetric orthorhombic space group Aba2. Their appropriateness for second-order non-linear optical (NLO) processes was validated by structural analysis. Excellent durability for high-power photonic applications was highlighted by optical investigations that showed a large transparency window with a cut-off at 251&#xa0;nm and a high laser damage threshold of 1.3311&#xa0;GW/cm<sup>2</sup>. Strong second harmonic generation (SHG) efficiency was demonstrated by MPBN, which was almost 3.3 times as efficient as potassium dihydrogen phosphate (KDP). Along with notable pyroelectric (5 × 10<sup>−3</sup> C·m<sup>−2</sup>·K<sup>−1</sup> at 50°C), piezoelectric (<i>d</i><sub>33</sub> = 17.21 pC/N), and ferroelectric responses (Pᵣ ≈ 0.61&#xa0;μC/cm<sup>2</sup>), the material demonstrated consistent dielectric behaviour, with negligible energy loss at high frequencies. Its versatility was further demonstrated by room-temperature ferromagnetism with considerable saturation magnetisation. A rare single-phase multiferroic crystal with significant NLO activity, MPBN is a prospective candidate for use in energy harvesters, frequency converters, sensors, and magneto-optoelectronic devices due to its synergistic optical, electrical, and magnetic capabilities.</p>

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Engineering a Multifunctional Bis(3-methyl-N-(1-(pyrazin-2-yl)ethylidene)benzohydrazonato-κ3O,N,N′)nickel(II) (MPBN) Single Crystal for Next-Generation Multiferroic and Photonic Technologies

  • 期刊论文

  • 发表日期：

    2025年10月14日

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  • P. Vivek

摘要

Slow evaporation was used to successfully generate bis(3-methyl-N-(1-(pyrazin-2-yl)ethylidene)benzohydrazonato-κ3O,N,N′)nickel(II) (MPBN) single crystals, which crystallised in the non-centrosymmetric orthorhombic space group Aba2. Their appropriateness for second-order non-linear optical (NLO) processes was validated by structural analysis. Excellent durability for high-power photonic applications was highlighted by optical investigations that showed a large transparency window with a cut-off at 251 nm and a high laser damage threshold of 1.3311 GW/cm2. Strong second harmonic generation (SHG) efficiency was demonstrated by MPBN, which was almost 3.3 times as efficient as potassium dihydrogen phosphate (KDP). Along with notable pyroelectric (5 × 10−3 C·m−2·K−1 at 50°C), piezoelectric (d33 = 17.21 pC/N), and ferroelectric responses (Pᵣ ≈ 0.61 μC/cm2), the material demonstrated consistent dielectric behaviour, with negligible energy loss at high frequencies. Its versatility was further demonstrated by room-temperature ferromagnetism with considerable saturation magnetisation. A rare single-phase multiferroic crystal with significant NLO activity, MPBN is a prospective candidate for use in energy harvesters, frequency converters, sensors, and magneto-optoelectronic devices due to its synergistic optical, electrical, and magnetic capabilities.