Magnetic and dielectric properties of the PbFeBO4 single crystal

Pankrats, A. I.; Sablina, K. A.; Великанов, Д. А.; Воротынов, А. М.; Bayukov, O. A.; Eremin, A. M.; Мolokeev, Maxim S.; Popkov, S. I.; Krasikov, A. A.

doi:10.1016/j.jmmm.2013.10.018

Cited by 21 publications

(32 citation statements)

References 16 publications

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“…However, our measurements [3] performed on the single-crystal PbFeBO 4 show the absence of a broad peak of the magnetic susceptibility in the paramagnetic region; the temperature dependence of the susceptibility in the paramagnetic region follows the Curie-Weiss law. Most likely, the broad peak of the susceptibility observed in [2] is not due to the correlations of the short-range magnetic order but is rather induced by the contribution of the -Fe 2 O 3 hematite phase present in the polycrystalline sample.…”

Section: Discussionmentioning

confidence: 63%

“…In addition, the PbFeBO 4 crystal has a relatively high Neel temperature T N = 114 K, which is not typical of most quasi-low-dimensional magnets. Based on these data, it is concluded [3] that the PbFeBO 4 crystal is most likely a threedimensional antiferromagnet.…”

Section: Discussionmentioning

confidence: 94%

“…It is also important that the studies on single crystals provide more information allowing one to study the anisotropic properties of matter. The magnetic studies of the PbFeBO 4 single crystals which were grown by spontaneous crystallization allowed us [3] to explain them as typical of the threedimensional antiferromagnetic order and to refine the Neel temperature as T N = 115 K. We also investigated the dielectric properties of PbFeBO 4 and found anomalies for both polycrystalline and single-crystal samples, which indicates the correlation between the magnetic and electrical subsystems in the crystals.…”

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confidence: 99%

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Peculiarities of a magnetic transition in a quasi-one-dimensional ferromagnet PbMnBO4

Pankrats

Kolkov

Martynov

et al. 2019

Journal of Magnetism and Magnetic Materials

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Near the Curie temperature T C = 30.3 К, the temperature dependences of the magnetization and heat capacity of a single-crystal ferromagnet PbMnBO 4 in the magnetic fields of 1, 3, 10 and 30 kOe are studied. In the strong magnetic fields, both the magnetic contribution to the specific heat and the nonlinearity of the field dependences of the magnetization are maintained up to the temperatures exceeding T C more than twice. It is assumed that in PbMnBO 4 the difference between T C , the paramagnetic Curie temperature  = 49 K and the broad temperature region above T C where the magnetic contribution to the specific heat is significant is due to the quasi-one-dimensional character of the magnetic structure of this ferromagnet. Using both the estimation of T C from the Ginzburg-Landau field theory and the  value, the total exchange interaction parameters 2J  40.4 K (intrachain) and z'J'  8.8 K (interchain) are determined, with z' = 4 being the number of neighboring chains. The estimation shows that the Ginzburg-Landau field theory describing the quasi-one-dimensional behavior of PbMnBO 4 is well applicable in the temperature range from to T = S 2 J  80 K. Above this temperature, the mean field approximation with the exchange parameter  θ based on the paramagnetic Curie temperature  describes well the experimental temperature dependences of the magnetization in the strong magnetic field and the specific heat is determined by the lattice contribution. 1. Introduction. The search for and synthesis of new magnetic materials, as well as the investigation of their physical properties, are the priority tasks in solid-state physics. Such studies allow one to find promising materials for technical applications, and also provide experimental data for studying new physical effects arising at the intersection of magnetic, electrical, elastic, and other properties of solid state physics. The crystal classes which admit the existence of a family of isomorphous magnets with different magnetic ions in one of the crystallographic positions attract particular interest. This property can lead to a variety of physical properties, in particular, to different magnetic structures in the family of isomorphous crystals. Orthoborate crystals with the general formula PbABO 4 are representatives of such an interesting family. Their structure for A = Ga, Al was first studied by H. Park et al. [1] where the orthorhombic structure with the space group Pnma was established. Later the same group of authors investigated the magnetic properties of polycrystalline compounds with A = Fe, Cr, and Mn [2] and found that the type of magnetic order depends on the paramagnetic ion A. The antiferromagnetic order was established for Fe and Cr with the Néel temperatures of 125 K and 8.3 K, respectively. The compound with A = Mn showed the ferromagnetic order with the Curie temperature T C = 31 K.

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Section: Discussionmentioning

confidence: 63%

Section: Discussionmentioning

confidence: 94%

mentioning

confidence: 99%

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Peculiarities of a magnetic transition in a quasi-one-dimensional ferromagnet PbMnBO4

Pankrats

Kolkov

Martynov

et al. 2019

Journal of Magnetism and Magnetic Materials

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“…These materials crystallize in the non-centrosymmetric structure of the mineral huntite CaMg3(CO3)4 [24,25]. Other examples of complex magnetic oxyborates can be found in the literature, for instance, an actively studied quantum antiferromagnet SrCu2(BO3)2 [26,27], PbMBO4 (M = Cr 3+ , Mn 3+ , and Fe 3+ ) [28,29], a recently synthesized LiMBO3 (M = Mn 2+ , Fe 2+ , Co 2+ ) [30], and many others.…”

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Lattice dynamics and a magnetic-structural phase transition in the nickel orthoborateNi3(BO3)2
Pisarev
¹
,
Prosnikov
²
,
Davydov
³

et al. 2016
Phys. Rev. B
18
1
10
0
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Nickel orthoborate Ni3(BO3)2 having a complex orthorhombic structure Pnnm (#58, Z=2) of the kotoite type is known for quite a long time as an antiferromagnetic material below We performed the symmetry analysis of the phonon modes at the center of the Brillouin zone.The structural parameters and phonon modes were calculated using Dmol3 program. We report and analyze results of infrared and Raman studies of phonon spectra measured in all required polarizations. Most of the even and odd phonons predicted on the basis of the symmetry analysis and theoretical calculations were reliably identified in the measured spectra. A clear evidence of the spin-phonon interaction was found for some particular phonons below TN. Unexpected emergence of several very narrow and weak phonon lines was observed in the infrared absorption spectra exactly at the magnetic ordering temperature TN. Moreover, anomalous behavior was found for some Raman phonons. Emergence of new phonon modes in the infrared and Raman spectra exactly at TN proves existence of a magnetostructural phase transition of a new type in Ni3(BO3)2. A possible nature of this transition is discussed.

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“…Немаловажным преимуществом является также значительно меньшее поле спин-флоп-перехода в слабом антиферромагнетике, определяемое только одноионной анизотропией. Отметим, что в изоструктурном кристалле PbFeBO 4 обнаружены аномалии диэлектрических свойств при температуре установления ближнего и дальнего магнитного порядка, что указывает на корреляцию между магнитной и электрической подсистемами в этом кристалле [26].…”

Section: Discussionunclassified

Одноионный Механизм Слабого Антиферромагнетизма И Спин-Флоп-Переход В Двухподрешеточном Ферромагнетике

Мартынов¹

2020

Физика Твердого Тела

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The ground state of a Heisenberg ferromagnet with noncollinear single-ion anisotropy axes of two sublattices is investigated in the external magnetic field applied in the anisotropy axes plane. The noncollinearity of local anisotropy axes leads to new effect - the first order spin reorientation phase transition of the spin-flop type. The transition field depends on the value of anisotropy and orientation of the sublattice axes. Stability analysis of magnetic states shown that the field induced transition is accompanied by the magnetization hysteresis. The dependencies of the spin-flop transition field, the magnetization jump value and the susceptibility on the anisotropy parameters are determined. The obtained results are used for explanation of the magnetization field dependence in the ferromagnetic crystal PbMnBO_4.

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Magnetic and dielectric properties of the PbFeBO4 single crystal

Cited by 21 publications

References 16 publications

Peculiarities of a magnetic transition in a quasi-one-dimensional ferromagnet PbMnBO4

Peculiarities of a magnetic transition in a quasi-one-dimensional ferromagnet PbMnBO4

Lattice dynamics and a magnetic-structural phase transition in the nickel orthoborateNi3(BO3)2
Pisarev
¹
,
Prosnikov
²
,
Davydov
³

et al. 2016
Phys. Rev. B
18
1
10
0
View full text Add to dashboard Cite

Одноионный Механизм Слабого Антиферромагнетизма И Спин-Флоп-Переход В Двухподрешеточном Ферромагнетике

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Magnetic and dielectric properties of the PbFeBO4 single crystal

Cited by 21 publications

References 16 publications

Peculiarities of a magnetic transition in a quasi-one-dimensional ferromagnet PbMnBO4

Peculiarities of a magnetic transition in a quasi-one-dimensional ferromagnet PbMnBO4

Lattice dynamics and a magnetic-structural phase transition in the nickel orthoborateNi3(BO3)2Pisarev1, Prosnikov2, Davydov3 et al. 2016Phys. Rev. B181100View full textAdd to dashboardCite

Одноионный Механизм Слабого Антиферромагнетизма И Спин-Флоп-Переход В Двухподрешеточном Ферромагнетике

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Lattice dynamics and a magnetic-structural phase transition in the nickel orthoborateNi3(BO3)2
Pisarev
¹
,
Prosnikov
²
,
Davydov
³

et al. 2016
Phys. Rev. B
18
1
10
0
View full text Add to dashboard Cite