APS March Meeting, Baltimore, 12 March 2006

TUTORIAL

MAGNETIC PHENOMENA IN CRYSTALS

OF HIGH-SPIN MOLECULES

Eugene M. Chudnovsky

CUNY Lehman College and Graduate School

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Magnetic clusters:

Mn, Mn2, Mn3, Mn4, [Mn4]2, Mn5, Mn6, Mn7, Mn8, Mn9, Mn10,

Mn11, Mn12, Mn13, Mn16, Mn18, Mn21, Mn24, Mn26, Mn30, Mn84

Fe2, Fe3, Fe4, Fe5, Fe6, Fe7, Fe8, Fe10, Fe11, Fe13, Fe17/19, Fe19

Co4, Co6, Co10

Ni4, Ni5, Ni6, Ni8, Ni12, Ni21, Ni24

Co2Gd2, Co2Dy2, Cr12, CrNi6, CrNi2, CrCo3, Fe10Na2, Fe2Ni3,

Mn2Dy2, Mn2Nd2, V15, Ho, ...

• • • • • •

S = 0, 1/2, 1, 3/2, 2, 5/2, 4, 9/2, 5, …………. 33/2

Quantum Magnetization CurveJ. Friedman, M. Sarachik, J. Tejada, R. Ziolo (PRL - 1996)

Magnetization curve of Fe-8 (W. Wernsdorfer)

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Effect of polarized microwaves on the magnetization curve of Fe-8

L. Sorace, W. Wernsdorfer, C. Thirion, A.-L. Barra, M. Pacchioni, D. Mailly, and

B. Barbara, Phys. Rev. B 68, 220407 (2003)

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12Mn

Avalanches in Mn-12 Acetate

CCNY Experiment – 2005, Suzuki et al.

Magnetic Deflagration

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acetate Mn in ondeflagrati Magnetic 12

Quantum Magnetic Deflagration

[A. Hernandez-Minguez et al, PRL – November 2005]

Lectures on Magnetism(with 128 Problems)

Eugene M. Chudnovsky

Javier Tejada

!" Rinton Press

Lectu

res on

Magn

etis mw

i th 1

28 P

roblem

s

!"

Lectures on Magnetism

with 128 Problems

This book is intended as a compact one-semester course for graduate

and upper-level undergraduate students. It teaches basic language

and ideas that are used by researchers working in the field of

magnetism of solids. In selecting the material the preference has

been given to simple mathematically rigorous models that explain

magnetic phenomena qualitatively. The book consists of three

chapters, twenty four sections; each section being accompanied by

homework problems. Magnetism at the nanometer scale of

individual atoms and molecules is discussed in the first chapter.

Magnetic order at the mesoscopic scale of many interacting atoms

and itinerant electrons is studied in the second chapter. Magnetism at

the macroscopic scale of magnetic domains is considered in the third

chapter. The chapters are connected through demonstration of the

fact that same magnetic phenomena can be looked at from different

angles and described by models that use different techniques. The

book should be useful for students who plan to work in condensed

matter physics and material science. It can also be of interest to

students specializing in other fields because many ideas and methods

initially developed to describe magnetism of solids subsequently

entered other areas of physics.

Visit Rinton Press on the World Wide Web at: http://www.rintonpress.com

E. M

. Ch

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J. T

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