Magnetization steps due to pairs of distant-neighbor spins in Zn1-xCoxSe and Zn1-xCoxS

Shapira, Y.; Yu, Tianlin; Lau, Bayo; Foner, S.; McNiff, E. J.; Heiman, D.; Thieme, C.L.H.; Niu, Chunming; Kershaw, R.; Dwight, K.; Wold, A.; Bindilatti, V.

doi:10.1016/0038-1098(90)90269-h

Cited by 24 publications

(5 citation statements)

References 13 publications

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“…Therefore, we believe that our value of JP is the exchange parameter value of the next-nearest-neighbor interaction. Shapira et al also obtained a low value of the exchange parameter in Codoped zinc chalcogenides and interpreted it as the next-nearest-neighbor interaction [3].…”

Section: Resultsmentioning

confidence: 97%

“…Lewicki et al investigated the magnetic susceptibility of Cd1-xCοxSe and found the exchange interaction parameter J/kB of -37 K, about five times larger than in Cd1 -x Mnx Se [2]. Shapira et al measured the high-field magnetization in Ζn1-x C ox S e and Ζn1-x Cox S and from the steps observed in magnetization they determined an exchange parameter of an order of -3 K [3]. They attributed this value to the next-nearest-neighbor interaction.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Magnetization and Susceptibility of Cd_1-xCo_xSe

et al. 1992

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The magnetization and magnetic susceptibility of Bridgman-grown Cd1-xCoxSe with values of x up to 0.04 have been measured over a temperature range from 2 to 390 K and in magnetic fields up to 23 Τ. A pairexchange value J/kB of about -3 K was obtained from the magnetic field dependence of the magnetization. This exchange is probably due to the next-nearest-neighbor interaction. The high-temperature susceptibility data indicated a presence of the Curie-Weiss like paramagnetism and the temperature independent Van Vleck type paramagnetism.

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Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Magnetization and Susceptibility of Cd_1-xCo_xSe

et al. 1992

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“…by the authors of [7] who studied the magnetization, and in [8] by studying magnetoreflectance and magnetization on the cobalt-doped wide-gap semiconductors CdSe, ZnSe, and ZnS. The authors of [8] …”

Section: Tiki -mentioning

confidence: 98%

Features Peculiar to Transport Phenomena in Cobalt‐Doped HgSe Crystals

Tsidilkovskii

Lerinman

Sabirzyanova

et al. 1992

Physica Status Solidi (b)

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On Hg,-,Co,Se (5 x lo-' 2 x 2 1 x lo-*) crystals the Hall coefficient, resistivity, and Shubnikovde Haas oscillations of transverse magnetoresistance are measured. Experimental findings permit the conclusion that in mercury selenide, cobalt atoms form a resonance donor level. However, by contrast with mercury selenide crystals doped with iron and chromium, the cobalt impurity does not lead to the known electron mobility "anomaly" due to the ordering of the system of charged impurities. Shubnikov-de Haas oscillations exhibit peculiarities arising from a substantial exchange interaction of conduction band electrons with 3d electrons of cobalt ions.Ha KpIICTXKXiX Hg,-,CO,Se ( 5 X lo-' 2 X 5 1 X H3MepeHbI K03@@HlWieHT XOJIJIa, YAeJIbHOe COllpOTHBJIeHHe II OClIHJIJIfllPiH ~y6HIIKOBa-Ae raa3a IlOIIepeYHOrO MaTHPiTOCOnPOTHBJIeHIIfl. 3KCIIe-PHMeHTaJIbHbIe AaHHbIe II03BOJIRWT 3aKJIWYHTb, YTO aTOMbI KO6aJIbTa 06pa3yWT B CeJIeHHAe PTYTll pe3OHaHCHbIfi AOHOPHbIfi ypOBeHb. OAHaKO, B OTJIHYHe OT KpIICTaJIJIOB CeJIeHAAa PTYTH, JIerHpOBaHHbIX PeJIe30M II XPOMOM, npIIMeCb KO6aJIbTa He npIIBOAUT K H3BeCTH06 "aHOMaJIHEI" IlOAB€CKHOCTA WIeKTPOHOB, 06yCJIOBJIeHHOfi yIIOpflAOYeHHeM CElCTeMbI 3aPRXeHHbIX IIpXMeCefi. OC~HJIJIRUAH my6HII-KOBa-Ae raa3a 06HapyXIIBaIoT OCO6eHHOCTri, CBX3aHHbIe C CyLL(eCTBeHHb1M 06MeHHbIM B3aIIMOAekT-BHeM 3JIeKTpOHOB 30HbI IIPOBOAHMOCTH C 3d 3JIeKTpOHaMH HOHOB KO6aJIbTa.

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“…Thus far J2 steps were observed only in Cobased DMS, in which the exchange interactions (including J2) are relatively strong [13,19]. There is, of course, no reason to stop at J2.…”

Section: The J1-j2 Modelmentioning

confidence: 99%

Diluted Magnetic Semiconductors in High Magnetic Fields

Shapira

1995

Acta Phys. Pol. A

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Magnetization studies of diluted magnetic semiconductors in high fields are reviewed. Magnetization steps due to pairs were originally used to measure the near neighbor exchange constant J1. They are now also used to determine: (1) the smaller exchange constants J2 and J3 , (2) the difference between J1 's for inequivalent near neighbors in wurtzite diluted magnetic semiconductors, and (3) the Dzyaloshinski-Moriya interaction. A different type of magnetization step, due to isolated ions, is used to determine the un iaxial anisotropy of Co ++ ions in wurtzite diluted magnetic semiconductors. In Fe-based diluted magnetic semiconductors the high-field magnetization exhibits two effects: (1) strong dependence on field direction in cubic diluted magnetic semiconductors, and (2) reversal of the un iaxíal magnetization-anisotropy in wurtzite diluted magnetic semiconductors.In (100) EuTe/PbTe superlattices the antiferromagnetic transition, both at zero and finite H, is depressed when the EuTe 1ayer becomes only a few monolayers thick. The easy directions are in the (100) płane of the layer, which is explained by the dipole-dipole anisotropy.

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Magnetization steps due to pairs of distant-neighbor spins in Zn1-xCoxSe and Zn1-xCoxS

Cited by 24 publications

References 13 publications

Magnetization and Susceptibility of Cd_1-xCo_xSe

Magnetization and Susceptibility of Cd_1-xCo_xSe

Features Peculiar to Transport Phenomena in Cobalt‐Doped HgSe Crystals

Diluted Magnetic Semiconductors in High Magnetic Fields

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Magnetization steps due to pairs of distant-neighbor spins in Zn1-xCoxSe and Zn1-xCoxS

Cited by 24 publications

References 13 publications

Magnetization and Susceptibility of Cd1-xCoxSe

Magnetization and Susceptibility of Cd1-xCoxSe

Features Peculiar to Transport Phenomena in Cobalt‐Doped HgSe Crystals

Diluted Magnetic Semiconductors in High Magnetic Fields

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Product

Resources

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Magnetization and Susceptibility of Cd_1-xCo_xSe

Magnetization and Susceptibility of Cd_1-xCo_xSe