The modulational theory of nonlinear gravity-wave in fluid with varying depth and nonuniform current

Yansheng, Chen; Chinpu, Zhou

doi:10.1007/bf02486591

Cited by 2 publications

(5 citation statements)

References 8 publications

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“…Although the alloys show a variation in Mn content, the change in TN associated with Mn content (28.1-31.5 at.%) is small [7,20]. The magnetic susceptibility was measured with a model-300 magnetic balance.…”

Section: Methodsmentioning

confidence: 99%

“…Previous investigations have reported the antiferromagnetism of y-Fe-Mn alloys as well as the influence of the transition elements Ni, CO, Cr and V on the characteristics of the NCel transition of y-Fe-Mn host alloys [l-51. In the case of y-Fe-Mn alloyed with nontransition elements, recent research by Zhang [4, has shown that an increase in A1 (3s23p') or Si (3s23p2) content lowers the NCel temperature TN and markedly increases the magnetic susceptibility x, and the antiferromagnetic transition is accompanied by obviously anomalous changes in electric resistivity, elastic modulus and thermal expansion. These interesting phenomena reveal that the valence electrons of A1 and Si probably interact with the outer-energy band of the host alloys, but it is as yet difficult to explain in detail how this occurs.…”

Section: Introductionmentioning

confidence: 99%

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The effect of the Ge content on the paramagnetic-antiferromagnetic transition in γ-Fe-Mn alloys

Zhang¹,

Hongbin²

1990

J. Phys.: Condens. Matter

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The temperature T dependence of magnetic susceptibility chi in the range 77-600 K and the Mossbauer absorption spectra at 310 K were measured for gamma -Fe-30 at.% Mn alloys containing 2.01, 3.45, 5.63 and 8.73 at.% Ge. With increasing Ge content, the Neel temperature TN decreases linearly while chi increases markedly and becomes temperature dependent above TN, i.e., the Pauli paramagnetism of the alloys becomes a paramagnetism obeying the Curie-Weiss law. This behaviour of Fe-Mn-Ge is essentially similar to that of gamma -Fe-Mn alloys containing Al or Si. The behaviour of the chi -T curves as well as the Mossbauer spectra results reveal that the increase in Ge content has led to a decrease in the itinerant character of 3d electrons in gamma -Fe-Mn host alloys and to an increase in the localised net moment at the Fe atoms. These observations lead the authors to assume that alloying Fe-Mn with Ge alters the host density of states and consequently the Fermi level, which gives rise to a change in localised moment at Fe atoms. Finally, the Neel temperature of gamma -Fe-Mn host alloys as a function of the average electron concentration has been discussed in brief.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effect of the Ge content on the paramagnetic-antiferromagnetic transition in γ-Fe-Mn alloys

Zhang¹,

Hongbin²

1990

J. Phys.: Condens. Matter

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“…Figure 1 shows that Cr decreases the Néel temperature (T N ) and the susceptibility (χ) above T N , but it does not 0022-3727/98/070884+05$19.50 c 1998 IOP Publishing Ltd change the basic features of Curie-Weiss paramagnetism of FeMnAl alloys above T N . This suggests that Cr slightly weakens the antiferromagnetism of FeMnAl alloy, even though Cr is an antiferromagnetic element; also it may be quite different from Al, Ge and Si, which markedly increase the susceptibility and its temperature dependence [5,9,10].…”

Section: Susceptibility (χ)mentioning

confidence: 99%

“…The effects of the non-transition elements Al, Si or Ge on the antiferromagnetic-paramagnetic transition of FeMn alloys have been investigated by Zhang [5,9,10]. His results shows that an increase in Al, Si or Ge lowers the T N , markedly increases resistivity and susceptibility, and changes susceptibility to be temperature dependent above T N .…”

Section: The Effect Of Cr Content On the Strain Sensitivity Coefficie...mentioning

confidence: 99%

“…They proposed that Cr reduces the starting temperature for the austenite γ → martensite transformation (M s ), and increases the stability of austenite in FeMn alloy [4]. Based on the anomaly of resistivity due to the antiferromagneticparamagnetic transition of FeMn alloys, Zhang [5,6] has suggested the possibility of developing a new FeMnAlCr precision resistance alloy and has made some progress.…”

Section: Introductionmentioning

confidence: 99%

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The effect of chromium content on the various magnetic, electrical and mechanical properties of FeMnAl alloys

Lü¹,

Zhang²

1998

J. Phys. D: Appl. Phys.

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FeMnAl alloys with different Cr contents have been investigated with regard to susceptibility , resistivity , Young's modulus ( E), strain sensitivity coefficient of resistance ( K) and the stress sensitivity coefficient of resistance ( B). The results show that Cr linearly reduces the Néel temperature and the minimum resistivity temperature , but for each alloy is practically independent of Cr content (21-25 K). Cr increases the Young's modulus below , reduces the modulus softening due to the paramagnetic-antiferromagnetic transition, and tends to reduce the Young's modulus ( E) above . Cr reduces the strain sensitivity coefficient of resistance (K) and the stress sensitivity coefficient of resistance ( B), but it has little influence on the B anomaly caused by the paramagnetic-antiferromagnetic transition.

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The modulational theory of nonlinear gravity-wave in fluid with varying depth and nonuniform current

Cited by 2 publications

References 8 publications

The effect of the Ge content on the paramagnetic-antiferromagnetic transition in γ-Fe-Mn alloys

The effect of the Ge content on the paramagnetic-antiferromagnetic transition in γ-Fe-Mn alloys

The effect of chromium content on the various magnetic, electrical and mechanical properties of FeMnAl alloys

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