Effect of Pressure on a Chiral Two-Dimensional Ferrimagnet

Iriguchi, Kazuyuki; Komorida, Y.; Akiyama, I; Mito, Masaki; Kishine, Jun‐ichiro; Deguchi, H.; Yoshida, Yusuke; Inoue, Katsuya

doi:10.1143/jpsjs.76sa.192

Cited by 2 publications

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“…2(c), #4 presents huge M 0 3x at f ¼ 1 Hz, while its magnitude is suppressed with increasing f. Figure 2(d) shows that #4 is not accompanied by a phase delay against H AC . In the ac magnetic measurement obtained under hydrostatic pressure using a polycrystalline sample 31 and under uniaxial strain using a single crystal, 32 the anomaly of M 0 3x /h due to #4 was suppressed by the slight stress, and it disappeared under a stress corresponding to 7 kbar. On the other hand, that due to #3 survives even at further pressure.…”

Section: Resultsmentioning

confidence: 97%

Magnetic diagnostics using the third-harmonic magnetic response for a molecule-based magnet networked by a single chiral ligand

Mito

Iriguchi

Deguchi

et al. 2012

Journal of Applied Physics

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We investigated complex magnetic domain formation on a chiral molecule-based magnet, [Cr(CN)6][Mn(R)-pnH(H2O)](H2O) (termed as R-GN), whose two-dimensional molecular network was constructed with the help of a single-handed chiral ligand ((R)-pn). There, the first- and third-harmonic magnetic responses (M1ω and M3ω) against the ac magnetic field were observed, and magnetic hysteresis in ac field of a few Oe was discussed in terms of Rayleigh loop. The diagnostics of this magnetic hysteresis clarified the complex process of magnetic domain formation against a change in temperature. For R-GN, it was reported that a giant M3ω (termed #4 in this paper) appeared just above the so-called “magnetic ordering temperature (TC).” In the present study, three M3ω responses (#1-3) were newly observed on the lower-temperature side of #4, and the ac field dependencies for all of #1-#4 were investigated. #1 also accompanied the giant M3ω, which suggests that a significant degree of magnetic fluctuation surviving below TC. This glassy behavior below TC is an attractive new phenomenon in molecule-based magnets with a single-handed chiral ligand. #2 and #3 exhibited magnetic ordering and the formation of a small magnetic domain, respectively. The M3ω responses of #1-3 were suppressed with increasing the amplitude of ac field, and the corresponding magnetic hysteresis was a normal Rayleigh loop accompanying the out-of-phase of the M1ω response. The M3ω response of #4 without the out-of-phase of M1ω was, however, enhanced with increasing the amplitude of ac field, and #4 represented a large magnetic hysteresis in the paramagnetic region, intrinsically different from those of #1-#3.

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Section: Resultsmentioning

confidence: 97%