SECURITY CLASSIFICATION or TmIS PAGE /I4hon l)mo Frift'd)i/ 0 ~ 0 . REOTDOCUMENTATION PAGE IiR MFD~ Ui~ REPORT- ~ BI3ORE COM PL EIN I'CIRM IREPORT NumBe.R GOVT ACCESSION NO RiX.r IENT S CA'TALOG NUMBER 4. TITLE (and Subtil..) TYPr; OF Rr.'OTT &PERIOD COVERED ManeicProperties of Lithium Ferrite 'Microwave Kfl 10/1/77 to 4/15/82 6PERFORMING ORG. REPORT NUMBER 7. AUTHOR(&) SCOTATOR GRANT NUMBERCe) 1 Carl E. Patton DAAG29-77-GO0209i S. PRFORING RGANZATON NME AD ADRES PROGRAM ELLMF:NT. PROJECT. 7ASK ARrA & WORK T)IMr NUMBMERS - 11. COTOLN OICE AM AND ADDRESS fo 14EPORT OATE US.Army Research Office July 1982 P. 0.Box 1211 1 NUM8EITOFPAGECS 14.MONTOINGAGEZYNAM b ODESSIt iferet fomControli ng Oi.) IS. SECURITY CLA:1 (of uhfreport) 16. DISTRIBUTION STATEMENT (offhZi. Report) Approved for public release; distribution unlinited. 17. DISTRtIBUTION STATEMENT (of the abstract anteted In Block 20, It dlfferetit fr',, Re.port) 1S. SUPPLEMENTARY NOTES The findLngs in this rcport are not to be construed as anl official Department of the Army position, unless so designated by other authorized documents. 19. KEY WOiAOS (Continua on reer a It n.'eaaary and Identity by block nurmher) Lithium ferrite, microwave materials, magnetic properties ,44 ~ 20, ABSTRACT (Canthue rvree olit' it n*.~oaead Identify by block nitmber) ~1~~ This report summarizes work accomplished onl the above grant, including note are the results concerning the high field magnetization in Li-Zn ferrite, effects of oxygen firing of poly crys talline Li-ferrite, the effect of substitu- tions in Li-Co ferrite on the anstoyand mi-rowave properties, and the understanding of nonlinear microwave poessin ferrites. Some groundwork has also been done on very high frequency (mmn wave) material strategies. DD 14AN 73 EDITION Of NOV 65IS OUSOLETEDtaI~~urcf 82 07 15 013
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REOTDOCUMENTATION PAGE IiR MFD~T Ui~REPORT- ~ BI3ORE COM PL EIN I'CIRM
IREPORT NumBe.R GOVT ACCESSION NO RiX.r IENT S CA'TALOG NUMBER
4. TITLE (and Subtil..) TYPr; OF Rr.'OTT &PERIOD COVERED
ManeicProperties of Lithium Ferrite 'Microwave Kfl 10/1/77 to 4/15/826PERFORMING ORG. REPORT NUMBER
7. AUTHOR(&) SCOTATOR GRANT NUMBERCe) 1
Carl E. Patton DAAG29-77-GO0209i
S. PRFORING RGANZATON NME AD ADRES PROGRAM ELLMF:NT. PROJECT. 7ASKARrA & WORK T)IMr NUMBMERS -
11. COTOLN OICE AM AND ADDRESS fo 14EPORT OATE
US.Army Research Office July 1982P. 0.Box 1211 1 NUM8EITOFPAGECS
14.MONTOINGAGEZYNAM b ODESSIt iferet fomControli ng Oi.) IS. SECURITY CLA:1 (of uhfreport)
16. DISTRIBUTION STATEMENT (offhZi. Report)
Approved for public release; distribution unlinited.
17. DISTRtIBUTION STATEMENT (of the abstract anteted In Block 20, It dlfferetit fr',, Re.port)
1S. SUPPLEMENTARY NOTES
The findLngs in this rcport are not to be construed as anl official Departmentof the Army position, unless so designated by other authorized documents.
19. KEY WOiAOS (Continua on reer a It n.'eaaary and Identity by block nurmher)
Lithium ferrite, microwave materials, magnetic properties ,44
~ 20, ABSTRACT (Canthue rvree olit' it n*.~oaead Identify by block nitmber) ~1~~This report summarizes work accomplished onl the above grant, including
note are the results concerning the high field magnetization in Li-Zn ferrite,
effects of oxygen firing of poly crys talline Li-ferrite, the effect of substitu-
tions in Li-Co ferrite on the anstoyand mi-rowave properties, and theunderstanding of nonlinear microwave poessin ferrites. Some groundworkhas also been done on very high frequency (mmn wave) material strategies.
DD 14AN 73 EDITION Of NOV 65IS OUSOLETEDtaI~~urcf
82 07 15 013
MANGNETIC PROPERTIES OF LITHIUM FERRITEMICROWAVE MATERIALS
Final Report
U. S. Army Research OfficeGrant DAAG29-77-G-0209
Oct. 1, 1977 to Oct. 15, 1980
Con tract DAAG29-80-K-0084__ _ _ _ _ IOct. 15, 1980 to April 15, 1982
Accession For 1
Unan-cuncedJ fs±±'cat -
I~ ~ ~ .... o
DL DT L'a
Carl E. Patton
Colorado State Unive rsi1.ty INSPECIEFort Collins, Colorado 80523 1 1
Approved for Public ReleaseDistribution Unlinited
aZLIW3%,
ABSTRACT M
This report summarizes work accomplishedon the above grant, including
publications, participating personnel and degrees awarded. Of particular
note are the results concerning the high field magnetization in Li-Zn
ferrite, effects of oxygen firing of polycrystalline Li-ferrite, the effect
of substitutions in Li-Co ferrite on the anisotropy and microwave properties,
and the understanding of nonlinear microwave processes in ferrites. Some
groundwork has also been done on very high frequency (mm wave) material
strategies.
91-
iliii
_ _ _ _ _ _ _ _ _ _ _ _
I
The findings in this report are not to be
construed as an official Department of the Army
position, unless so designated by other authorized W
documents.
IM
_I
iii
9Z:
ai• 4
TABLE OF CONTENTS
Page
Abstract .. ....................... .. .. .. . ..
I. Results 1
A. High F~eld Magnetization in Zn Substituted Li-Ferrite.......
B. Effects of Oxygen Firing of Polycrystalline Li-Ferrite 1
C. Effect of Substitutions on Anisotropy and Relaxationin Li-ferrite................... .. ... . .. .. .. .. .. . ...
D. Relaxation and Non-linear Microwave Processes .. .........2 ;
E. Millimeter Wave Material Strategies .. .............. 3
F. Instruwantation .. ........................ 3
G. Reviews .. ............................ 4
I. Personnel.. ..................... .. .. .. ....
54
iv
-0- -.- Own
I. Results
The six sections of Chapter I summarize (for results already in print)
and describe (for results not yet in print) the work accomplished in the .
following categories and in the publications listed:
A. High Field Magnetization in Zn-Substituted Li-Ferrite
(1) "High Field Nagnetization Studies in Lithium Zinc Ferrite",
G. 0. White, C. A. Edmondson, R. B. Coldfarb and C. E. I AI
Patton, J. Appl. Phys. 50, 2381 (1979).
(2) "Magnetic Properties of Lithium Zinc Ferrite", C. E. Patton, ,d
C. A. Edmondson and Y. H. Liu, J. Appl. Phys. 53, 2431 (1982). A
(3) "ossbauer Study of lyperfine Field Distributions and Spin
Canting in Lithium Zinc Ferrites", M. Rosenberg, P. Deppe,
S. Dey and C. E. Patton (to be published).
(4) "Canting Models for Substituted Magnetic Oxides", C. E. Patton
and Y. I. Liu (to be published - to be submitted to Phys. Stat.
Solids).
B. Effects of Oxygen Firing of Polycrystalline Li-Ferrite
C. Effect of Substitutions on Relaxation and Anisotropy in Lithium
Ferrite
(5) "Microwave Properties of Arc Plasma Sprayed Lithium Ferrite", '1R. E. Kaelberer, G. 0. W hite and C. E. Patton, J. Physique
(France), 38, CI-255 to CI-259 (1977).
(6) Microwave Relaxation Properties of Substituted Lithium
Ferrite", C. E. Patton, D. L. Blankenbeckler, C. J. Brower,
B. B. Dalton and A. M. Lucero, IEEE Trans. Magnetics 17, 2976