Ditemukan 6760 dokumen yang sesuai dengan query
Cracknell, Arthur P.
New York: Pergamon Press , 1975
548.85 CRA m
Buku Teks Universitas Indonesia Library
New York: Academic Press, 1967
538 MAG
Buku Teks SO Universitas Indonesia Library
Amsterdam: North Holland, 1982
538 MAG
Buku Teks SO Universitas Indonesia Library
"
ABSTRAK The magnetoresistivity and Hall resistivity of Pd/Co multilayers have been investiagted down to 4.2 K, focusing on the difference between samples with in-plane perpendicular magnetization. At 4.2 K, a sign change of the extraordinary Hall coefficient as a funktion of Co thickness is observed at ~2 A. For a Co layer thickness of 2 A, an anomaly is found in the temperature dependece of both resistivity and Hall coefficient near 250 K, suggesting a magnetic phase transition in an alloyed interface region"
Lengkap +
Amsterdam: Elsevier Science B.V, 2018
538 JMM
Majalah, Jurnal, Buletin Universitas Indonesia Library
Sears, Francis Weston, 1898-1975
Reading, Mass.: Addison-Wesley, 1951
537 SEA e
Buku Teks SO Universitas Indonesia Library
"This book brings together an emerging consensus on our understanding of the complex functional materials including ferroics, perovskites, multiferroics, CMR and high-temperature superconductors. The common theme is the existence of many competing ground states and frustration as a collusion of spin, charge, orbital and lattice degrees of freedom in the presence of disorder and (both dipolar and elastic) long-range forces. An important consequence of the complex unit cell and the competing interactions is that the emergent materials properties are very sensitive to external fields thus rendering these materials with highly desirable, technologically important applications enabled by cross-response."
Berlin : Springer, 2012
e20425146
eBooks Universitas Indonesia Library
Stefanita, Carmen-Gabriela
"This book offers broad coverage of magnetism, revealing key concepts on which many practical applications rest. Traditional subjects are discussed in the first half, and the second section includes coverage of today's technological achievements."
Berlin : Springer, 2012
e20425255
eBooks Universitas Indonesia Library
Purcell, Edward M.
Singapore: McGraw-Hill, 1981
538.3 PUR e II
Buku Teks SO Universitas Indonesia Library
Purcell, Edward M.
New York: McGraw-Hill, 1985
538.3 PUR e
Buku Teks SO Universitas Indonesia Library
Jaka Septian Kustanto
"Skripsi ini berisi studi teoritik tentang densitas keadaan (DOS) dan kemagnetan pada sistem GaAs:Mn. Sistem GaAs:Mn merupakan salah satu jenis diluted magnetic semiconductor. Pada studi ini diajukan model dengan Hamiltonian yang terdiri atas suku yang merepresentasikan dinamika elektron dalam GaAs murni dan interaksi pertukaran antara spin hole dan spin ion Mn. Hamiltonian bagian GaAs murni didekati dengan model k.p 8 band. Perhitungan dilakukan dalam kerangka dynamical mean field theory (DMFT). Dari penelitian ini didapatkan, TC paling optimum yang bisa diperoleh sebesar 116 K. Kami menyimpulkan bahwa nilai TC paling optimum didapat ketika konsentrasi hole sebesar setengah dari konsentrasi impuritas.
This bachelor thesis presents a theoretical study about density of states (DOS) and magnetism in GaAs:Mn. GaAs:Mn is known to classify into diluted magnetic semiconductor. In this study, we propose a model of which the Hamiltonian consists of a term of electron dynamics in GaAs and exchange interactions between hole spins and Mn ion spins. Hamiltonian of pure GaAs is approximated by k.p 8 band scheme. Calculations are employed within the dynamical mean field theory (DMFT). From our calculations, the optimum TC is found to be 116 K. We conclude that TC reaches on optimum value when hole concentraion is half of the impurity concentration."
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Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2014
S56055
UI - Skripsi Membership Universitas Indonesia Library
