Spin Structure as a Function of Magnetic Field and Temperature in MnP Single Crystal

Komatsubara, T.; Shinohara, Hajime; Suzuki, Takashi; Hirahara, Eiji

doi:10.1063/1.1657521

Cited by 19 publications

(10 citation statements)

References 3 publications

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“…[27][28][29][30][31][32] The character of the magnetic phases, both in zero and nonzero magnetic fields, is influenced by the orthorhombic magnetocrystalline anisotropy. Below, we make a complete description of the phase diagram, drawn in Fig.…”

Section: Mnp Phase Diagrammentioning

confidence: 99%

Influence of the strong magnetocrystalline anisotropy on the magnetocaloric properties of MnP single crystal

et al. 2008

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Manganese monophosphate MnP single crystal deserves attention due to its rich magnetic phase diagram, which is quite different depending on the direction of the applied magnetic field. Generally speaking, it has a Curie temperature around 291 K and several other magnetic arrangements at low temperatures ͑cone-, screw-, fan-, and ferromagnetic-type structures͒. This richness is due to the strong magnetocrystalline anisotropy. In this sense, the present paper makes a thorough description of the influence of this anisotropy on the magnetocaloric properties of this material. From a fundamental view we could point out, among those several magnetic arrangements, the most stable one. On the other hand, from an applied view, we could show that the magnetic entropy change around room temperature ranges from −4.7 to − 3.2 J / kg K, when the magnetic field ͑5 T͒ is applied along the easy and hard magnetization directions, respectively. In addition, we have shown that it is also possible to take advantage of the magnetic anisotropy for magnetocaloric applications, i.e., we have found a quite flat magnetic entropy change ͑with a huge relative cooling power͒, at a fixed value of magnetic field, only rotating the crystal by 90°.

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Section: Mnp Phase Diagrammentioning

confidence: 99%

Influence of the strong magnetocrystalline anisotropy on the magnetocaloric properties of MnP single crystal

et al. 2008

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“…2, lower panel) we obtain an estimation of the Curie temperatures, T C ¼ 294 K, for the GaP:MnP films that is slightly higher than those corresponding to MnP powder (291 K) and to the MnP film (290 K). The almost identical T C 's as well as the similarities in the magnetization curves of powder and thin film forms of MnP, compared to single crystal, [7][8][9][10] indicate that the magnetic signal is mainly due to MnP nanocrystals. The small decrease of the magnetization at the lowest temperatures, which is better seen as a steep increase of the derivative (Fig.…”

Section: A Magnetic Datamentioning

confidence: 81%

MnP films and MnP nanocrystals embedded in GaP epilayers grown on GaP(001): Magnetic properties and local bonding structure

Andrés

Espinosa

Prieto

et al. 2011

Journal of Applied Physics

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MnP nanostructures embedded in GaP epilayers, and MnP polycrystalline films, grown from the vapor phase on GaP(001) substrates using metalorganic precursors are compared with bulk MnP. We observe a large increase of the low transition temperature from the ferromagnetic to the antiferromagnetic screw phase, from T N ¼ 47 K for bulk to 82 K for nanocrystals in MnP:GaP films, while the Curie temperature T C, close to room temperature, varies only slightly. A net magnetic moment is measured in the nanocrystals and films at 5 K, as well as large coercive fields, contrary to bulk MnP. X-ray absorption spectroscopy and diffraction show that epilayers and films contain MnP grains in the nanometric range with average Mn-P bond lengths very close to those of bulk MnP. The MnP film lattice parameters are almost identical to bulk values (within 0.5%) and the main crystallographic preferential orientations are those also present in the epilayers but with different relative populations. Overall the local structures of all MnP forms are very similar, except for indications of more disorder in the nanocrystals. Such combined changes of T N and T C are in apparent contradiction with the known response of bulk MnP to strains induced by hydrostatic, uniaxial or chemical pressure. We conclude that the differences in the low temperature magnetic behavior are most probably originated by local structural disorder at the surface of the nanostructures and by finite size effects.

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“…Furthermore, MnP has the Lifshitz point where paramagnetic, ferromagnetic, and helicoidal phases meet [3]. The Lifshitz point which has various magnetic properties has been extensively studied [4].…”

Section: Introductionmentioning

confidence: 99%

Epitaxial MnP thin films: epitaxial growth, magnetic and electrical properties

Choi¹,

Choi²,

Sohn³

et al. 2006

Journal of Magnetism and Magnetic Materials

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Spin Structure as a Function of Magnetic Field and Temperature in MnP Single Crystal

Cited by 19 publications

References 3 publications

Influence of the strong magnetocrystalline anisotropy on the magnetocaloric properties of MnP single crystal

Influence of the strong magnetocrystalline anisotropy on the magnetocaloric properties of MnP single crystal

MnP films and MnP nanocrystals embedded in GaP epilayers grown on GaP(001): Magnetic properties and local bonding structure

Epitaxial MnP thin films: epitaxial growth, magnetic and electrical properties

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