1、BlIdFdLBlIdFxxdFFyydFF zzdFFd1I2I1BdIB2101d1I2I1B21Fd12221Bl dIFd21221dlBIdFl dI222102dldIIdIB210112Fd2Bl dI11210122dldIIdF2210212dldIIdF21Fd12Fdd1I2I1B21Fdl dI212Fd2Bl dI1221dldFF 112dldFdII21021210122dldIIdF2210212dldIIdFd1I2I1B21Fdl dI212Fd2Bl dI1dIIF2102XYABIFdyFdxFdlIdBlIdFdlIdFdcosdFdFxsindFdF

2、ysinIBdlIBdyIBdxLxxdFFLyydFFsindFBlIdFddlIBdFdyjdxil dXYABIFdyFdxFdlIdjIBLF0BAyyxIBdyFBAxxyIBdxFIBLXYABIFdyFdxFdlId 0Rabcdl lI0dadcbcabFFFFaddaBlIdFadIBdljjRlIB)2( dadcbcabFFFFjRlIB)2( 0Rabcdl lIyx0 xIB210dxBIdF2dxIxI2102dxBlIdFdFdbaadxIxIF2102abaIIln2210ZIBFdzFd/FdBlIdFdZIBFdzFd/FdBlIdFdlIdLzdFFLdF

3、sinIBdldF RdlIB20sinsin2 RIBlIdB1l2labcdadFbcFcdFabFIIB)(ba)(cdn1ladFsin1BIlFbcsin1BIlabF)sin(1BIlBIl2cdFBlIdFdcdFabFB)(ba)(cdn1ladFbcFabFcdFsin2sin211lFlFMcdabsin21BlIlsinISBnISPmBPMmabFBIl2cdFcdFabFB)(ba)(cdn1lsinNISBM BPMmsinISBM nNISPmBPMmcdFabFB)(ba)(cdn1lSIdpdm0SIIIBpdMdmBSIdBSIdMd0SMdM0SBSId0

4、SBnIdS0SdSBnIBPmnISPm0SBnI0SIIImPMBmaxBPMmcdFabFB)(ba)(cdn1lBPMmcdFabFB)(ba)(cdn1lIabdABCD IIabdABCD IABdldkIdakIABFCDCDBdlIFbdakICDdlbdkIBlIdFdABBdlIdbdkIlnBCBdlIdrrkIbddBCDAFFdakIFABbdakIFCDIabdABCD IDAFBCFCDABFFF)11(bddakI)(bddabkIdakIFABbdakIFCDIabdABCD I)11(bddakIFFFCDAB)(bdkdkaIDABBaI bBBabIDA

5、 bBBPDAmnISPmIabdABCD IIIabcd d cFIlBF ddFAddIlBladBlabcdaadBladabcabcdaadabcmmIAddBlddIlBAIIabcd d cFlMddABPMmsinBISBcdF)(cdabF)(ban)(cosBISddBISsin)cos(BSIdMddAmIddA)(SBIdsinBISM BcdF)(cdabF)(ban21mIdA)(12mmImImIAmIddABcdF)(cdabF)(ban1lId1lId2l d2l dFdA21)(l dBlIdBl dl dI)(12BSdI)(mIddAAmIBIR060nn

6、NISPmnRNI212nRNI212BIR060n060sinBPMm23212BRNI243RNIBnRNIPm212BPMmBIR060nmIA)60cos22(22RBRBNI241RNIB)(12IBIR060nvBLFBvqFLLCFFF)(BvEqBvqFLBvvBBvqFL0LFBvqvBFLBvR0LFqBmvR Rvm2BvqFLvvRT2qBm2vqBLFqBmvR BqBmT2qBmvR vvvBBcos/vv sinvv v/vvv/vBqBmvRqBmvTvh/2hqBmT2qBmvR R/vvv/vvIbdV12BdIBRUHHIbdV12BIB2V1dvBveF

7、LHCEeF0CLFFCF HEvLF0HEeBveBvEH21UUUH21l dEH21)(l dBv21vBdlvBbenvbdIdIBneUH1neRH10HEeBveIB2V1CF HEvLFbdneRH1dIBRUHH21UUUH21l dEH21vBdlvBbdIBnqUH1nqRH10HhhEqBvq21)(l dBvqnvbdI IB2V1CF HEvLFbdneRH1nqRH1NSINS0BBB0BBMVpMmV0lim)(內LLIldMH)()(0內LLIl dB內）LLIl dM(內）（LLLIl dMl dB001)()(0)(0內內LLII0BBB0IIIMBH0內）

8、（LLLIl dMl dB001)(0內LLIl dH0SSdBHMmm)(0MHBrm1HBr0MBH0Hm)1 (0rm1B0BB0BHMm)(0MHB0BB0BB B0B0BBmpLemem)( vmrLemL0BPMm0BmMeLem0BMemL0BMdtMLLememLddtMLem0BMemL0BMememem0B0BemmpLem0BMemL0BMememLem0BMemL0BMememBmpBVppMmmV0limmp0mpBH0abcsSBBH0cHrBs在外場作用下，磁矩與外場同在外場作用下，磁矩與外場同方向排列時的磁能將低于磁矩方向排列時的磁能將低于磁矩與外場反方向排列時的磁能與外場反方向排列時的磁能-磁性很強磁性很強r1R2R0I0Ir1R2R0I0I22100rRIiiLIl dH012102RIr02112IRrH12 rHr1R2R0I0I0211