This class is describes the uniaxial anisotropy. More...

#include <SM_UniaxialAnisotropyOperator.h>

Inheritance diagram for SM_UniaxialAnisotropyOperator:

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Collaboration diagram for SM_UniaxialAnisotropyOperator:

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Public Member Functions
virtual CORE_UniquePointer< SM_SliceOperator >	NewInstance () const override
	create a New instance of this More...

virtual tMemSize	getMemorySize () const
	return the memory size of the class and the memory size of all its attributes/associations More...

virtual tMemSize	getContentsMemorySize () const
	return the memory size of the included associations More...

void	computePhi (const tReal U, const tReal eU, const tReal S, const tReal eS, tReal &phi, tReal &W) const
	compute the \( \Phi_U(S) \) function More...

void	computePhiDerivatives (const tReal U, const tReal eU, const tReal S, const tReal eS, tReal &phi, std::array< tReal, SM_Constants::DIM > &gradPhi, tReal &W, tReal &W3) const
	compute the \( \nabla. \Phi_U(S) . U \) function More...

Public Member Functions inherited from SM_AnisotropyOperator< SM_UniaxialAnisotropyOperator >
virtual void	computeMagneticFieldSlice (const tIndex &stepIndex, const SM_Network &network, const SM_Material &material, const tIndex &startIndex, const tIndex &endIndex, const tReal S, const tBoolean &alpha, const tIndex &nH, tReal H) const
	compute the anisotropy magnetic field by virtual method More...

virtual tReal	computeSpinEnergy (const tIndex &i, const tIndex &stepIndex, const SM_Network &network, const SM_Material &material, const SM_RealField &S) const final
	compute the i-th spin anisotropy energy More...

void	computeSpinEnergy (const tReal &K, const tReal iU, const tReal eU, const tReal iS, const tReal eS, tReal &Ei, tReal &W) const
	compute the anisotropy spin energy More...

virtual tReal	computeEnergySlice (const tIndex &timeIndex, const SM_Network &network, const SM_Material &material, const tIndex &startIndex, const tIndex &endIndex, const tReal *S) const
	compute the energy at time t by virtual method for all particles in [startIndex,endIndex[ More...

void	computePhi (const tReal U, const tReal eU, const tReal S, const tReal eS, tReal &phi, tReal &W) const
	compute the \( \Phi_U(S) \) function More...

void	computePhiDerivatives (const tReal U, const tReal eU, const tReal S, const tReal eS, tReal &phi, std::array< tReal, SM_Constants::DIM > &gradPhi, tReal &W, tReal &W3) const
	compute the \( \nabla. \Phi_U(S) . U \) function More...

Public Member Functions inherited from SM_SliceOperator
const tString &	getName () const
	return the operator name More...

virtual void	copy (const SM_SliceOperator &op)
	copy More...

virtual void	adimensionize (const tReal &cH)
	adimensionize operator with characteric field value in J More...

virtual void	discretize (const SM_Network &network, const SM_Material &material)
	discretize the operator on the network More...

virtual void	updateState (const tIndex &timeIndex, const SM_Network &network, const SM_Material &material, const SM_RealField &S)
	update the stae of the operator at time index More...

virtual tString	toString () const override
	return string representaton of the operator

Public Member Functions inherited from SM_Object
	SM_Object (void)
	create

virtual	~SM_Object (void)
	destroy

Public Member Functions inherited from CORE_Object
template<class T >
std::shared_ptr< T >	getSharedPointer ()
	return the shared pointer for this More...

template<class T >
std::shared_ptr< const T >	getConstSharedPointer () const
	return a const shared pointer for this More...

template<class T >
tBoolean	isInstanceOf () const
	test if the clas T is an instance of this class More...

tString	getClassName () const
	return the name of the class More...

tString	getPointerString () const
	retrun the pointer of the class as a string More...

tString	getIdentityString () const
	retrun the string identification of the class More...

Static Public Member Functions
static CORE_UniquePointer< SM_UniaxialAnisotropyOperator >	New ()
	build a new instance of the operator More...

Static Public Member Functions inherited from CORE_Object
static tBoolean	EnableMemoryStack (const tBoolean &isMemoryChecked)
	enable the memory stack More...

static void	EnableMemoryStack ()
	enable the memory stack

static void	DisableMemoryStack ()
	disable the memory stack

static tBoolean	IsMemoryStackEnabled ()
	return trur if the memory stack is enabled

static tString	MemoryStackToString ()
	get the memory stack in string More...

static tIndex	GetRegisteredClassesNumber ()
	get the memory stack in string More...

Static Public Member Functions inherited from SM_LinearSliceOperator
static tReal	ComputeEnergy (const SM_Network &network, const SM_Material &material, const tIndex &startIndex, const tIndex &endIndex, const tReal S, const tInteger &nH, const tReal H)
	compute the energy by virtual method More...

Protected Member Functions
	SM_UniaxialAnisotropyOperator (void)
	create a network class

virtual	~SM_UniaxialAnisotropyOperator (void)
	destroy

Protected Member Functions inherited from SM_AnisotropyOperator< SM_UniaxialAnisotropyOperator >
	SM_AnisotropyOperator (void)
	create a network class

virtual	~SM_AnisotropyOperator (void)
	destroy

Protected Member Functions inherited from SM_SliceOperator
	SM_SliceOperator (void)
	create a network class

virtual	~SM_SliceOperator (void)
	destroy

void	setName (const tString &name)
	set the name More...

Protected Member Functions inherited from CORE_Object
	CORE_Object ()
	build an instance of the object

virtual	~CORE_Object ()
	destroy the instance of object std

Protected Member Functions inherited from SM_LinearSliceOperator
	SM_LinearSliceOperator (void)
	create a network class

virtual	~SM_LinearSliceOperator (void)
	destroy

Detailed Description

This class is describes the uniaxial anisotropy.

The adimensionized anisotropy energy is \( E= \displaystyle \sum_{i}^{i=P-1} \tilde K \Phi_U(S_i)\)

The adimensionized K is \( \tilde K = \frac{K}{\mu_0.\mu_B^2.A^{-3}} \)

In order to have \(\displaystyle \forall i \in [0,P[, \frac{dE}{dSi}(P)=- \mu_s \mu_B . H(P) \),

the corresponding magnetic excitation field is: \( H(P_i)=H^i= - \frac{\tilde K}{\mu_s.\mu_B} \nabla Phi_U(S_i) \)

The definition of \( \Phi \) is

\( \Phi_U(S)= - <S,U>^2 \)
\( \nabla \Phi_U(S) = - 2 . <S,U> . U \)

So that :

\( E= - \tilde \mu_s \displaystyle \sum_{i}^{i=P-1} \tilde K <S,U>^2 \)
\( H= \displaystyle 2. \frac{\tilde K}{\mu_s.\mu_B} <S,U>. U \)

Author
Stephane Despreaux

Version
2.0

Member Function Documentation

◆ computePhi()

void SM_UniaxialAnisotropyOperator::computePhi	(	const tReal *	U,
		const tReal *	eU,
		const tReal *	S,
		const tReal *	eS,
		tReal &	phi,
		tReal &	W
	)		const

inline

compute the \( \Phi_U(S) \) function

Parameters

[in]	U	begin iterator on anisotropy directions
[in]	eU	end iterator on anisotropy directions
[in]	S	begin iterator on direction of spin magnetic moment
[in]	eS	end direction of spin magnetic moment
[out]	phi	: the phi value \( <S,U>^2 \)
[out]	W	work value

◆ computePhiDerivatives()

void SM_UniaxialAnisotropyOperator::computePhiDerivatives	(	const tReal *	U,
		const tReal *	eU,
		const tReal *	S,
		const tReal *	eS,
		tReal &	phi,
		std::array< tReal, SM_Constants::DIM > &	gradPhi,
		tReal &	W,
		tReal &	W3
	)		const

inline

compute the \( \nabla. \Phi_U(S) . U \) function

Parameters

[in]	U	begin iterator on anisotropy directions
[in]	eU	end iterator on anisotropy directions
[in]	S	direction of spin magnetic moment
[in]	eS	end direction of spin magnetic moment
[out]	phi	: the phi value \( - <S,U>^2 \)
[out]	gradPhi	return value : \( \nabla \Phi_U(S) =- 2 . <S,U> . U \)
[out]	W	work value
[out]	W3	work value

◆ getContentsMemorySize()

virtual tMemSize SM_UniaxialAnisotropyOperator::getContentsMemorySize ( ) const

inlinevirtual

return the memory size of the included associations

Returns: the memory size of the storage in bytes 1 Kb = 1024 bytes 1 Mb = 1024 Kb 1 Gb = 1024 Mb 1 Tb = 1024 Gb 1 Hb = 1024 Tb

Reimplemented from SM_SliceOperator.

◆ getMemorySize()

virtual tMemSize SM_UniaxialAnisotropyOperator::getMemorySize ( ) const

inlinevirtual

return the memory size of the class and the memory size of all its attributes/associations

Returns

the memory size of the class and the memory size of its attributes/associations in bytes The mamory size is :

the added size of the base classes which contains:
- the primary attributes size depends on the order: (first delare the smallest attributes size
- all virtual functions costs <pointer-size> (4 32xor 8 64x) bytes by virtual function
- virtual inherihtance will increase of (4 or 8) bytes
we add the size of the contains values of the attributes : for example the size of a string is the length of the string 1 octet = 1 byte 1 Ko = 1024 bytes 1 Mo = 1024 Ko 1 Go = 1024 Mo

Reimplemented from SM_LinearSliceOperator.

◆ New()

static CORE_UniquePointer<SM_UniaxialAnisotropyOperator> SM_UniaxialAnisotropyOperator::New ( )

inlinestatic

build a new instance of the operator

Returns: an unique pointer of the operator

◆ NewInstance()

virtual CORE_UniquePointer<SM_SliceOperator> SM_UniaxialAnisotropyOperator::NewInstance ( ) const

inlineoverridevirtual

create a New instance of this

Returns: an unique pointer to the instance

Implements SM_SliceOperator.

The documentation for this class was generated from the following file:

/home/despreau/Developpement/CPP/devcpp20/include/stochmagnet/operators/anisotropy/SM_UniaxialAnisotropyOperator.h

Public Member Functions

Static Public Member Functions

Protected Member Functions