Spin-glass ordering in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Zn</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi>−</mml:mi><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Mn</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">In</mml:mi></mml:mrow><mml:mrow><mml

Goya, Gerardo F.; Sagredo, V.

doi:10.1103/physrevb.64.235208

Cited by 53 publications

(49 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An example is cation disorder, which can be studied by its effect on the magnetic properties [3,4]. Spin-glass behaviour was observed in Zn 1−x Mn x In 2 Te 4 [5] and in MnIn 2 Se 4 [6], end-point of the Zn 1−x Mn x In 2 Se 4 series we investigate here. The low Mn concentration side of the series is structurally similar to the II-VI DMS, in which extensive investigation of the exchange interactions between Mn 2+ ions has been performed [7].…”

Section: Introductionmentioning

confidence: 99%

The structure of Zn_1 xMn_xIn₂Se₄crystals grown by chemical vapour phase transport

Mantilla¹,

Brito²,

Haar³

et al. 2004

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

Abstract. Single crystals of Zn 1−x MnxIn 2 Se 4 were grown by the chemical vapour phase transport (CVT) technique. Through X-rays powder diffraction patterns and Laue diagrams of single crystals we studied the transformation from the layered rhombohedral structure of MnIn 2 Se 4 to the tetragonal structure of ZnIn 2 Se 4 . On the ZnIn 2 Se 4 side, we observe single-phase, solid solution samples for x=0.01 and x=0.25, as is the case for the MnIn 2 Se 4 side with x=1 and x= 0.87. For the intermediate concentrations x=0.35, x=0.60 and x=0.67 we observe our samples to be two-phase mixtures.

show abstract

Section: Introductionmentioning

confidence: 99%

The structure of Zn_1 xMn_xIn₂Se₄crystals grown by chemical vapour phase transport

Mantilla¹,

Brito²,

Haar³

et al. 2004

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

“…The frequency-sensitive parameter p is a simple approach to quantify the degree of interaction between magnetic moments and provides a model-independent classification of the blocking/freezing process. [13][14][15] The values of parameter p are usually in the range of 0.100-0.130 for noninteracting superparamagnetic particles, whereas for magnetically interacting systems, like spin glasses, the values of parameter p are observed in the range of 0.005-0.050. 14 We have calculated the value of parameter p from the experimental data using Eq.…”

Section: B Magnetic Propertiesmentioning

confidence: 99%

“…To identify the dynamic behavior of blocking/freezing processes, we have used the real part of ac susceptibility Ј͑T͒ through relation: 13,14 …”

Section: B Magnetic Propertiesmentioning

confidence: 99%

“…[6][7][8][9] The influence of the interparticle interactions on magnetic properties was studied by several works. [6][7][8][9][10][11][13][14][15][16][17] The interparticle interactions can increase the media noise and therefore the high-density recording requires the grains to be isolated to minimize the dipolar interactions. Strong dipolar interactions were observed in hematite nanoparticles prepared by different chemical ways.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Magnetic properties of Fe2O3 nanoparticles embedded in hollows of periodic nanoporous silica

Zeleňáková

Kováč

Zeleňák

2010

Journal of Applied Physics

View full text Add to dashboard Cite

The magnetic properties of the nanocomposite consisting of hematite ͑␣-Fe 2 O 3 ͒ nanoparticles embedded in the hollows of the periodic nanoporous silica matrix were investigated. The magnetic measurements showed on the superparamagnetic behavior of the nanoparticles. This behavior was evidenced by the irreversibility of magnetization curves measured in zero-field-cooled and field cooled regimes, by the presence of a maximum in zero-field-cooled magnetization curve related to blocking temperature T B ϳ 37 K and also by revealing of the coercivity H C below T B . The value of the magnetic moment m P ϳ 300 B of each iron-oxide particle was estimated. The interparticle interactions were investigated from dynamic properties using ac susceptibility. The susceptibility study shows, that the in-phase ac susceptibility Ј is frequency dependent and the peak position increases with the increase in the frequency. The quantitative analysis of Ј using theoretical models shows on the existence of weak dipolar interactions between particles. It was shown from correlation of experimental data with Arrhenius and Vogel-Fulcher laws that the incorporation of the nanoparticles into porous SiO 2 matrix provides the effective method for the reducing of dipolar interactions between magnetic nanoparticles with the size below 10 nm.

show abstract

“…Adding Be, Mn or Mg to AII-BVI materials causes almost linear changes of the value of their energy gap [1][2][3]. For analysis of properties of these crystals, photoacoustic techniques were applied.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Piezoelectric Photothermal Spectra of Cd 1-xMnxTe Mixed Crystals

Maliński

Zakrzewski²,

Łęgowski³

et al. 2005

Int J Thermophys

View full text Add to dashboard Cite

In this paper, the analysis of the piezoelectric photothermal (PPT) spectra of a series of Cd 1−x Mn x Te mixed crystals is presented. The results indicated that the investigated mixed crystals exhibited nonuniform composition which is the result of diversified spatial distribution of manganese ions in the samples. Computations of the piezoelectric spectra, performed in multi-layer models of real samples, enabled determination of the percentage compositions of crystals in the two crystal regions approach. Different types of spatial distribution of manganese in the samples were revealed. Application of the models also enabled a quantitative estimation of the state of the surface of investigated samples.

show abstract

Spin-glass ordering inZn1−xMnxIn

Cited by 53 publications

References 36 publications

The structure of Zn_1 xMn_xIn₂Se₄crystals grown by chemical vapour phase transport

The structure of Zn_1 xMn_xIn₂Se₄crystals grown by chemical vapour phase transport

Magnetic properties of Fe2O3 nanoparticles embedded in hollows of periodic nanoporous silica

Analysis of the Piezoelectric Photothermal Spectra of Cd 1-xMnxTe Mixed Crystals

Contact Info

Product

Resources

About

Spin-glass ordering inZn1−xMnxIn

Cited by 53 publications

References 36 publications

The structure of Zn1 xMnxIn2Se4crystals grown by chemical vapour phase transport

The structure of Zn1 xMnxIn2Se4crystals grown by chemical vapour phase transport

Magnetic properties of Fe2O3 nanoparticles embedded in hollows of periodic nanoporous silica

Analysis of the Piezoelectric Photothermal Spectra of Cd 1-xMnxTe Mixed Crystals

Contact Info

Product

Resources

About

The structure of Zn_1 xMn_xIn₂Se₄crystals grown by chemical vapour phase transport

The structure of Zn_1 xMn_xIn₂Se₄crystals grown by chemical vapour phase transport