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Register a new userCalculation of dispersion relation of collective spin density wave for thin film in alkali metals
حساب علاقة التشتت للموجة البنيوية (الجماعية) للكثافة السبينية لفيلم رقيق من المعادن القلوية
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Tishreen University ورقة بحثية
Publication date
2017
fields
Physics
and research's language is
العربية
Authors
محمود أحمد( باحث )
Created by
Shamra Editor
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تم في هذا البحث حل المعادلة الحركية للكثافة السبينية بحدود تحتوي معاملات لاندوا لفيلم رقيق مأخوذ بمثابة سطح بفراغ ذي بعدين . تصلح العلاقات الناتجة لحساب كل الصيغ الموجية للكثافة السبينية من أجل كيفي و ذلك بتابعية المتجه الموجي حتى المرتبة الثانية.كما تمت مقارنة النتائج المتحصل عليها هنا مع نتائج الحسابات النظرية و التجريبية المتوفرة في المراجع حتى الآن.
Using the transport kinetic equation for spin density in thin film as 2D Fermi liquid, the dynamic spin susceptibility is calculated in terms of the Landau parameters a for thin film. The formula allows to estimate the dispersion relation of susceptibility with arbitrary up to quadric term in wave vector 2 k . The possibility of experimental determine of Landau's parameters with higher is discussed and compared with others in this field.
References used
CULLITY,B.D.,introduction to magnetic materials;Addison-wesley.(1972)chapter 3 page87
NICOLA A.SPALDIN; magnticmaterials ,Fundamental and applications 2eddition,chapter5-7 page48(2010)
Silin,V.P.,Fiz.Metall.andMetallowed. 29,681 (1970)
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It was shown that the PS film is a transmittive film with a transmittance values
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the photon energy, and for the velocity 1000RPM it took the highest value ( 1.67 X
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The biggest value of Urbach energy Eu was (163mev) on the velocity 1000RPM and
the lowest value was (109mev) on the velocity 3000RPM.
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